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Morphology of Flowering Plants Class 11 Notes CBSE Biology Chapter 5 (Free PDF Download)

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Last updated date: 20th Jun 2024
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Revision Notes for CBSE Class 11 Biology Chapter 5 (Morphology of Flowering Plants) - Free PDF Download

There are almost 300,000 known species of flowering plants on the Earth, and in Class 11 Chapter 5, we are concerned about the morphology of the same. Being one of the essential chapters of Biology, students are required to gather in-depth knowledge to score remarkably in their exams. Furthermore, students will get to revise concepts like a simple and compound leaf, pinnately compound leaf and palmate compound leaf by going through the Class 11 Biology Chapter 5 Notes by Vedantu. Besides studying textbooks, you can refer to the Class 11 Biology Chapter 5 notes PDF prepared by subject experts.

Download CBSE Class 11 Biology Revision Notes 2024-25 PDF

Also, check CBSE Class 11 Biology revision notes for other chapters:



Morphology of Flowering Plants Chapter Related Important Study Materials
It is a curated compilation of relevant online resources that complement and expand upon the content covered in a specific chapter. Explore these links to access additional readings, explanatory videos, practice exercises, and other valuable materials that enhance your understanding of the chapter's subject matter.

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Morphology of Flowering Plants Basic Subjective Questions - Class 11 Revision Notes

Section–A (1 Mark Questions)

1. In mangroves, pneumatophores are the modified adventitious roots. How are these roots helpful to the plant?

Ans. Pneumatophores in mangroves help the plant to get oxygen for respiration.


2. State the main function of leaf tendril.?

Ans. In some plants, the leaves get converted to tendrils which help the plant for climbing, e.g., pea.


3. Why are mustard flowers referred to as hypogynous.?

Ans. The flowers of mustard are called hypogynous because the ovary is situated at the top and the other three whorls are inserted below it.


4. Name two plants where seeds do not have endosperm?

Ans. The plants that do not have an endosperm are beans, gram and pea.


5. What is the name given to the cotyledon in the case of monocots?

Ans. The monocots consist of one large and shield-shaped cotyledon known as the scutellum.


Section–B (2 Mark Questions)

6. What type of aestivation in corolla is found in the pea flower? Explain.

Ans. In peas, a vexillary type of aestivation is present in the corolla. In this type, there are five petals. The largest one (standard) overlaps the two lateral petals (wings) which in turn overlap the two smallest anterior petals (keel). This type of aestivation is also called papilionaceous. 


7. What is venation in leaves? What are the types of venation?

Ans. Vention- It is the arrangement of veins and the veinlets in the lamina of a leaf. There are mainly two types of venations:-

Parallel venation: In this, the veins run parallel to each other within a lamina, e.g., monocotyledons.

Reticulate venation:  In this, the veinlets form a network, e.g., dicotyledons. 


8. Provide the scientific terms for the following. 

(i) Swollen leaf base in leguminous plants.

(ii) The flat and expanded portion of a leaf. 

(iii) Orderly arrangement of leaves on the stem or branch. 

(iv) Lateral appendages on either side of the lea

Ans. (i) Pulvinus

(ii) Lamina/ leaf blade

(iii) Phyllotaxy 

(v) Stipules


9. What do you mean by inflorescence? Explain different types of it.

Ans. Inflorescence- It is the arrangement of flowers on the floral axis. It is divided into two types based on whether the apex gets converted into a flower or continues to grow.

(i) Racemose inflorescence- In this, the main axis continues to grow, the flowers are borne laterally in acropetal succession. 

(ii) Cymose inflorescence- In this, the main axis terminates in a flower, hence is limited in growth. The flowers are borne in a basipetal order.


10. Distinguish between prop root and stilt roots.

Ans. Prop roots- these roots arise from horizontal aerial branches of a tree. They provide support to the plant, e.g., the banyan tree.

Stilt roots- these roots arise from lower nodes of the stem. These roots provide support to the stem, e.g., maize, sugarcane.


11. (a) What are the three parts of an ovary?

(b) Define apocarpous ovary and syncarpous ovary. 

Ans. (a) The ovary is divided into three parts: stigma, style, and ovary.

(b) Apocarpous ovary- When more than one carpel is present, they may be free and called apocarpous, e.g., lotus and rose.

Syncarpous ovary- In such ovaries, carpels are fused, e.g., mustard and tomato.



Notes of Chapter 5 Biology Class 11 Free PDF Download


Yes, you read it right! You can download Chapter 5 Biology Class 11 Notes PDF free of cost. Besides, the important notes are prepared by experienced tutors that too following the latest CBSE rules and guidelines. This handy tool will not only help you in achieving desired scores but also improve your learning experience.


Mastering Class 11 Biology Chapter 5: Morphology of Flowering Plants - Notes, and Tips for Success

In the following section, you can get a glimpse of the topics provided in the Biology Notes for Class 11 Chapter 5 PDF.

Morphology involves the study of structure, size, colour, form, etc. of various components of an organism. Like you have read it in your previous classes, parts of a plant can be classified into two sections – the root and shoot system.


Roots: First, the topics of the root systems are covered. The classifications like taproots, fibrous roots and adventitious roots are elaborated. Next, the different root regions are discussed in Chapter 5 Class 11 Biology Notes:

  • Root cap.

  • Place where the meristematic activity takes place.

  • Elongation region.

  • Maturation region.

  • Root hairs.

Furthermore, the roots of a few plants change their structure and shape to offer other functions. Some examples are storage, respiratory, prop, adventitious, stilt, climbing, foliar and haustorial roots.


Stem: In this section of Class 11 Biology Notes Chapter 5, you will get to know about the different parts of the shoot system starting with the stem, nodes, internodes, etc. Further, the various modifications of stem-like sub-aerial modification (runner, stolon, sucker and offset), underground modification (tuber, rhizome, corm and bulb), and aerial modification (phylloclade and thorns) are discussed.


Leaf: Biology Class 11 Chapter 5 Notes PDF covers all the details related to leaves as per the CBSE curriculum. Starting from the diagram, leaf parts (leaf base, petiole and lamina), leaf types, lifespan of a leaf to lamina venations, students can stay assured to find every essential detail. Plus, the modification of leaves is also discussed explicitly.


Inflorescence: This section of Class 11 Biology Chapter 5 Notes cover the definition of inflorescence along with its types like racemose and cymose. These two classifications are further segregated into various types mentioned below:

  • Racemose – Raceme, spike, catkin, spadix, corymb, capitulum and umbel.

  • Cymose – Uniparous cyme (helicoid cyme and scorpioid cyme), dichasial or biparous cyme and multiparous cyme.

In the last portion of the leaf segment of class 11 Bio Ch 5 notes, special kinds of inflorescence like cyathium, hypanthodium and verticillaster are provided.

Flower: Ch 5 Bio Class 11 Notes PDF’s flower section introduces you to the various significant details about the flower and its comprising parts – stamen, petal, sepal and carpel, flower symmetry, floral leaf insertion, bract types, etc. Plus, you will also get to study about the different parts of a flower-like corolla and calyx and its various forms. Moreover, information about the types of aestivation in corolla is explored like valvate, twisted, imbricate and vexillary.


Detailed explanations on stamen cohesions (monadelphous, diadelphous, synandrous, syngenesious and polyadelphous), stamen adhesions, their length, ovule cohesion, placentation, etc., have also been provided.


Fruit and Seed: Like the previous parts of a plant, the fruit and seed section also covers all details associated with the same. Like for instance, you will get accustomed to what is meant by epicarp, endocarp, mesocarp, true and false fruit, fruit classifications, etc. On the other hand, the seed section covers the structure of a dicot and monocot seed.


Besides, some other topics like the semi-technical description of a flowering plant, vegetative character, floral characters, and essential flowering plant families and their economic importance, etc. are also elaborated.


This Biology Chapter 5 class 11 Notes offered by Vedantu can be used as a last-minute preparation aid for exams. You can easily download the same and study it anywhere at any point in time both online and offline.


Conclusion

The revision notes for Class 11 Biology Morphology of Flowering Plants provided by Vedantu are an excellent resource for students to revise the important concepts covered in the chapter. The notes cover all the important topics in the chapter, including the different parts of a flowering plant, their functions, and adaptations. The revision notes are presented in a concise and easy-to-understand manner, making it easier for students to retain the information. They also include diagrams and illustrations to help students visualize the different structures and processes. Vedantu provides additional study materials, such as sample papers and solutions to previous year question papers, to help students prepare for their exams. By using these resources, students can revise the important concepts covered in the chapter and perform well in their exams.

FAQs on Morphology of Flowering Plants Class 11 Notes CBSE Biology Chapter 5 (Free PDF Download)

1. What are the Characteristics of Angiosperms?

Angiosperms comprise of all flower-bearing plants on the Earth and hence are also termed as flowering plants. They can adapt to the various surrounding environment and grow up to become bushes, shrubs, herbs and other small-sized plants. Some essential features of angiosperms include: (a) angiosperms contain stamen and tiny pollen grains (b) they feature small female reproductive parts (c) they produce endosperm (d) they flower at least once in their lifespan.

2. What are the Dissimilarities Between Flowering and Non-Flowering Plants?

The fundamental difference between a flowering and non-flowering plant is the way they reproduce. Pollination is the method of reproduction for flowering plants, and non-flowering plants make use of dispersion. Another dissimilarity is that flowering plants are further segregated into angiosperms and gymnosperms, while non-flowering ones are classified into Bryophyta, Pteridophyta and Thallophyta. Furthermore, flowering and non-flowering plants also differ in the way they attract animals. Although both the types are prone to all kinds of pests, small mammals, etc., you will notice that butterflies, birds and bees are also attracted to flower-bearing plants. They do not harm the plant, rather harvest pollen and nectar.

3. What are the Parts of a Flower?

There are four basic parts of a flower, namely – calyx, corolla, androecium and gynoecium. Firstly, the calyx is the sepals comprising the outermost part of a flower, supporting the entire structure. Secondly, corolla denotes the brightly coloured petals attracting birds, butterflies, etc., facilitating pollination. Thirdly, androecium is the male reproductive part consisting a stalk, filament and anther. Lastly, the gynoecium is the female reproductive part containing stigma, ovary and style.

4. Why Vedantu’s Class 11 Biology Chapter 5 Notes are Essential?

Vedantu curates thorough revision notes that will assist students during their both terminal and final examinations. Plus, Class 11 Chapter 5 Biology Notes feature crucial topics that are immensely important for students. Besides, the notes are prepared in simple and straightforward language and written by subject experts having years-long expertise in the field.

5. What is morphology in flowering plants?

Morphology in flowering plants refers to the study of the different parts of a flowering plant. It is a must for the students of Class 11 to study the different parts of a flowering plant because it shows a wide variation in the shape, size, and structure of its flowers, leaves, and other parts. Students will also study different terms related to the morphology of flowering plants. Morphology of flowering plants also includes the structure of seeds in detail and different types of seeds.

6. Is the morphology of flowering plants important for NEET?

The morphology of flowering plants is discussed in Class 11 Biology Chapter 5. It is an important Chapter for the students preparing for NEET. Many short and multiple-choice questions are asked from the chapter in the NEET. Students of Class 11 should thoroughly study and understand the concepts given in Chapter 5 of Class 11 Biology. They can refer to the Class 11 Biology Chapter 5 Revision Notes for understanding the details and major concepts are given in the chapter.

7. What is inflorescence Class 11 Biology Chapter 5?

Inflorescence Class 11 Biology refers to the arrangement of flowers in a flowering plant. There are two types of inflorescence seen in flowering plants.  

  • Racemose: In this type of arrangement, the new flowers grow near the apex and older flowers remain at the base. 

  • Cymose: In this type of arrangement, new flowers grow at the base and old flowers remain at the apex. 

Students of Class 11 can understand inflorescence from the Biology notes available at the Vedantu website and on the Vedantu app for free. They can visit the page CBSE Class 11 Biology Revision Notes Chapter 5 to download the Class 11 Biology Chapter 5 notes at free of cost.

8. How do you memorize the morphology of flowering plants?

Students of Class 11 have to understand and learn the concepts of the morphology of flowering plants to memorize. Students can study from the Class 11 Biology Chapter 5 Revision Notes. The notes are given in easy to understand language for the students of Class 11. They can read the CBSE Class 11 Biology notes Chapter 5 to memorize the main concepts. All concepts are given in detail so that students can memorize the main terms easily.

9. What are the different regions of a root Class 11 Biology?

Roots have different parts. The main parts of roots include root cap, region of meristematic activity, region of elongation, region of maturation, and modifications of the root. The root cap covers the apex and protects it. In the region of meristematic activity, cells divide. The cells in the region of elongation enlarge and help in the growth of roots. The region of maturation is the part where matured cells are found. Modifications of roots can occur to support the plants.