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Find one word for the The following sta...

Find one word for the The following statements and choose the correct option.
(i) Residual, persistent nucellus in seed -A
(ii) Microspores arranged in a cluster of four cells - B
(iii) Special cellular thickening at the micropylar end of emrbyo sac - C
(iv) Development of seeds without fertilization - D

A

A - Perisperm, B - Megaspore tetrad

B

C - Filiform apparatus, D - Apomixis

C

A - Endosperm, C - Micropyle

D

B - Microspore tetrad, B - Amphimixis

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to identify the correct terms for each of the statements provided (A, B, C, D). Let's go through each statement step by step: ### Step-by-Step Solution: 1. **Statement (i)**: "Residual, persistent nucellus in seed - A" - The term for a residual, persistent nucellus in a seed is **perisperm**. This is the tissue that remains after fertilization and is found in some seeds. 2. **Statement (ii)**: "Microspores arranged in a cluster of four cells - B" - The arrangement of microspores in a cluster of four cells is known as a **microspore tetrad**. This occurs during the process of microsporogenesis in the anther of the flower. 3. **Statement (iii)**: "Special cellular thickening at the micropylar end of embryo sac - C" - The special cellular thickening found at the micropylar end of the embryo sac is called the **filiform apparatus**. This structure helps guide the pollen tube to the egg cell during fertilization. 4. **Statement (iv)**: "Development of seeds without fertilization - D" - The process of seed development without fertilization is termed **apomixis**. This is a form of asexual reproduction that mimics sexual reproduction. ### Final Answer: Based on the above definitions: - A = Perisperm - B = Microspore tetrad - C = Filiform apparatus - D = Apomixis The correct option that includes all these terms is **Option B**.
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