CBSE Class 7 Science Reproduction in Plants Worksheets with Answers - Chapter 12 - PDF
FAQs on CBSE Class 7 Science Reproduction in Plants Worksheets
1. Explain sexual reproduction in plants from Chapter 12 of NCERT solutions for Class 7 Science.
Sexual reproduction in plants is a process in which both male and female gametes fuse to form a new individual. Pistils and stamens are the female and male reproductive organs in plants that bear ovaries and anthers respectively. These concepts are explained in brief in the NCERT Solutions framed by the experts at Vedantu. Every answer is created with utmost care based on the understanding abilities of Class 7 students. The faculty make use of simple and understandable language to make learning fun for the students.
2. Do the NCERT solutions for Class 7 Science Chapter 12 provide accurate answers?
The NCERT Solutions for Class 7 Science Chapter 12 provides students with answers which are 100% accurate. Top tutors who have vast experience in the respective subject have designed the solutions to provide in-depth knowledge among students. It provides hands-on experience to students based on the latest CBSE syllabus and guidelines. The NCERT Solutions are modified regularly to keep students updated with the changes occurring in the current industry.
3. Describe the various ways by which seeds are dispersed.
Seeds and fruits of plants are carried away by the wind, water and animals. Winged seeds such as those of drumstick and maple, light seeds of grasses or hairy seeds of aak (Madar) and hairy fruit of the sunflower, get blown off with the wind to faraway places. Some seeds are dispersed by water. These fruits or seeds usually develop floating ability in the form of the spongy or fibrous outer coat as in coconut. Some seeds are dispersed by animals, especially spiny seeds with hooks that get attached to the bodies of animals and are carried to distant places. Examples are Xanthium and Urena. Some seeds are dispersed when the fruits burst with sudden jerks. The seeds are scattered far from the parent plant. This happens in the case of castor and balsam.
4. What is reproduction in plants?
Parents are known as reproduction. Reproduction in plants is a new concept for students of the 7th standard. This chapter introduces the mode of reproduction in plants. Going further, this topic shed knowledge on sexual reproduction, fruits and seed formation and seed dispersal.
5. Describe the methods of asexual reproduction?
Asexual reproduction is a form of reproduction in which a single parent produces a new offspring. The new individuals developed are genetically and physically similar to one another, implying that they are clones of their parents.
Various methods of asexual reproduction
Different methods of asexual reproduction are:
Vegetative propagation
In this asexual reproduction, new plants are produced from the roots, stems, leaves and buds of the individual plant.
Examples – Tuber of potato, the rhizome of ginger.
Budding
The bud is a small projection that gradually grows and gets detached from the parent cell and forms a new yeast cell. The new yeast cell grows, matures and produces more yeast cells.
Example – Yeast.
Fragmentation
In this mode of reproduction, the growth and multiplication are done by rapidly breaking down into two or more fragments. Each fragment grows into new individuals when water and nutrients are available.
Example – Algae
Spore Formation
This reproduction is done by spores which under favorable conditions germinate and develop into a new individual.
Examples – Fungi like Rhizopus, Mucor, etc.
Fission
It is a type of asexual reproduction where the unicellular organism splits to form new organisms. There are two types of fission which are:
Binary fission
Multiple fission
Examples- Unicellular organisms that undergo binary fission are amoeba, paramecium, Leishmania etc. Plasmodium undergoes the process of multiple fission.