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Question
Give scientific reason.
Flower is a structural unit of sexual reproduction in plants.
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Solution
Flower is structural unit of sexual reproduction in plants. It consists of four floral whorls as calyx, corolla, androecium and gynoecium; arranged in sequence from outside to inside. Androecium and gynoecium are called 'essential whorls' because they perform the function of reproduction whereas calyx and corolla are called as 'accessory whorls' because they are responsible for protection of inner whorls.
RELATED QUESTIONS
A student was asked to observe and identify the various parts of an embryo of a red kidney bean seed. He identified the parts and listed them as under:
I. Tegmen
II. Testa
III. Cotyledon
IV. Radicle
V. Plumule
The correctly identified parts among these are
(A) I, II and III
(B) II, III and IV
(C) III, IV and V
(D) I, III, IV and V
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State significance of pollination.
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A student identified the various parts of an embryo of a gram seed and listed them as given below :
(I) Testa
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(A) I, II, III
(B) II, III, IV
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(D) II, IV, V
You are asked by your teacher to study the different parts of an embryo of a gram seed. Given below are the steps to be followed for the experiment:
I. Soak the gram seeds in plain water and keep them overnight.
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Name the part made up of the stigma, style and ovary.
Name the swollen lower part of the carpel.
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(b) (ii), (iii) and (iv)
(c) (ii) and (iii)
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In the figure given alongside, the parts marked A, B and C are sequentially :
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(b) plumule, radicle and cotyledon
(c) plumule, cotyledon and radicle
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Multiple choice question. Tick (✓) the correct choice:
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Define.
Inflorescence
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What is puberty?
