Biology
Assertion: Both proteins and starch are richly found in the endosperm as well as the cotyledon of the maize grain.
Reason: Maize grain is an example of an endospermic seed. Hence, proteins and starch are stored in the endosperm which can be easily utilized by the developing embryo.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
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Answer
A is false but R is true.
Reason — A is false because in maize grain, food like starch and proteins are mainly stored in the endosperm, not richly in the cotyledon. Maize is a monocot seed with only one cotyledon called the scutellum, which mainly absorbs food from the endosperm for the embryo.
R is true as maize is an endospermic (albumin) seed, meaning the endosperm persists and stores food materials such as: starch and proteins.
Therefore, A is false but R is true is the correct option.
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Related Questions
Assertion: All aquatic plants get pollinated only by the most easily available pollinating agent-water.
Reason: Flowers of some aquatic plants are exposed to air and can be pollinated by insects.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion: The yellow, fleshy, edible part of the peach is mesocarp which develops from the wall of the ovary.
Reason: Mesocarp is the middle layer of the pericarp between the protective epicarp and stony endocarp.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Match the columns:
Column A Column B a) Radicle (i) Shoot b) Plumule (ii) Store food material c) Cotyledon (iii) Root d) Testa (iv) Absorb water needed for germination e) Micropyle (v) Protection of seed Name the following:
- Four whorls of a bisexual flower.
- Four pollinating agents.
- Two types of seeds on the basis of the number of cotyledons.
- Two types of germination.
- Two types of pollination.