Give an example of a plant which bears naked seeds.
Answer
553.8k+ views
Hint: Gymnosperms are seed producing plants with unclosed seed, i.e, their seeds are open without any protection. Gymnosperms have naked seeds which results in the lack of an ovary as the seeds are not contained in a fruit.
Complete Answer:
The seeds of gymnosperms usually develop at the surface of
leaves or form cones. The largest gymnosperms are known to be conifers. Other large
gymnosperms include cycads and gnetophyte.
There are over 1000 gymnosperm species that presently exist on Earth.
Conifers are the most abundant gymnosperms with almost 70 genera and almost 630
species. They are woody and mostly evergreen. Coniferous leaves are long, needle-like and
thin. Other gymnosperm species have flat and triangular scale-like leaves.
Cycads have 11 genera and almost 340 species. They are usually found in tropical climates
and are most abundant in the equatorial region.
Gymnosperms are economically useful. They are used in the production of lumber, paper
and resin. Some gymnosperms are used in the manufacturing of soap, varnish, perfumes
and nail polish.
Note:
It has been speculated by many researchers that gymnosperms developed on Earth around the Carboniferous period. Gymnosperms replaced the lycopsid rainforests in the tropical region in the Carboniferous period. The development of gymnosperms originated from a genome duplication event that occurred about 320 million years ago.
Gymnosperms lack an outer covering or shell around their seeds.
They do not produce flowers.
They do not produce any fruits.
Complete Answer:
The seeds of gymnosperms usually develop at the surface of
leaves or form cones. The largest gymnosperms are known to be conifers. Other large
gymnosperms include cycads and gnetophyte.
There are over 1000 gymnosperm species that presently exist on Earth.
Conifers are the most abundant gymnosperms with almost 70 genera and almost 630
species. They are woody and mostly evergreen. Coniferous leaves are long, needle-like and
thin. Other gymnosperm species have flat and triangular scale-like leaves.
Cycads have 11 genera and almost 340 species. They are usually found in tropical climates
and are most abundant in the equatorial region.
Gymnosperms are economically useful. They are used in the production of lumber, paper
and resin. Some gymnosperms are used in the manufacturing of soap, varnish, perfumes
and nail polish.
Note:
It has been speculated by many researchers that gymnosperms developed on Earth around the Carboniferous period. Gymnosperms replaced the lycopsid rainforests in the tropical region in the Carboniferous period. The development of gymnosperms originated from a genome duplication event that occurred about 320 million years ago.
Gymnosperms lack an outer covering or shell around their seeds.
They do not produce flowers.
They do not produce any fruits.
Recently Updated Pages
Master Class 12 Economics: Engaging Questions & Answers for Success

Master Class 12 English: Engaging Questions & Answers for Success

Master Class 12 Social Science: Engaging Questions & Answers for Success

Master Class 12 Maths: Engaging Questions & Answers for Success

Master Class 12 Physics: Engaging Questions & Answers for Success

Master Class 9 General Knowledge: Engaging Questions & Answers for Success

Trending doubts
One Metric ton is equal to kg A 10000 B 1000 C 100 class 11 physics CBSE

Difference Between Prokaryotic Cells and Eukaryotic Cells

Two of the body parts which do not appear in MRI are class 11 biology CBSE

Find the value of the expression given below sin 30circ class 11 maths CBSE

1 ton equals to A 100 kg B 1000 kg C 10 kg D 10000 class 11 physics CBSE

Draw a diagram of nephron and explain its structur class 11 biology CBSE

