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(A) : Coconut milk is very rich and nutr...

(A) : Coconut milk is very rich and nutritive drink.
(R) : It is in fact a free nuclear endosperm.

A

If both (A) and (R) are true and (R) is the correct explanation of (A).

B

If both (A) and (R) are true but (R) is not the correct explanation of (A).

C

If (A) is true but (R) is false.

D

If both (A) and (R) are false.

Text Solution

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The correct Answer is:
A
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In coconut the endosperm is free-nuclear endosperm

Read the following statements and find out the incorrect statement. a. Embryo development precedes endosperm development. b. Though the seeds differs greatly the early stages of embryo development (embrogeny) are similar in both monocotyledons and dicotyledons. c. A typical dicotyledonous embryo consists of an embryonal axis and two cotyledons. d. Endosperm may either be completely consumed by the developing embryo (e.g., castor and coconut) before seed maturation or it may persist in the mature seed (e.g., wheat, rice , pea, groundnut and beans). e. The coconut water from tender coconut is cellular endosperms and the surrounding while kernal is the nuclear endosperm.

S_(1) : Ancient India was a rich and prospersours conutry. S_(6) : In fact, material wealth and social through grew side by side. P : Education and culture were equally well-developed. Q : The standard of living of the people was very high. R : Development was not confined to economy alone. S : Travellers from foreign lands reported of general comcomforts prevailing here. Which one of the following is the correct sequence?

Assertion : In Cocos nucifera coconut water represents the cellular endosperm and the surrounding white kernel represents the free-nuclear endosperm. Reason : Endosperm is always completely consumed by developing embryo before seed maturation.

Assertion Nuclear endosperm does not involve wall formation after each meiotic division. Reason Coconut milk is an example of cellular endosperm.

Assertion (A): The coconut water from tender coconut is free nuclear endosperm and the surrounding white kernel in coconut is the cellular endosperm. Reason (R): Primary endosperm nucleus (PEN) undergoes successive nuclear divisions to produce free nuclei.

In summer season, Suman want to the market with his father to buy fruits and vegetables. His father purchased two green coconuts to drink coconut water to qench their thirst. Suman curiosly asked his father a botany teacher, the following questions : (i) What is morphological nature of coconut water and what is its nutritive value ? (ii) Besides coconut water , what are other products obtained from coconut tree ? (iii) Which type of reproduction is involved in the formation of endosperm ?

Read the following statements and mark them as True (T) or False a.coconut water from tender coconut has thousands of free nuclei. b.Both endosperm and perisperm are similar in ploidy level and their origin d.Single large shield shaped cotyledon of wheat embryo is known as epiblast

a) Describe the endosperm development in coconut. b) Why is tender coconut considered a healthy source of nutrition? c) How are pea seeds different from castor seeds with respect to endosperm?

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