Anatomy of Flowering Plants
- Which one of the following statements is correct?
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Tulips are most popular and wildly grown flowers. Tulips are bulbs, possessing modified stems and leaves.
Correct Option: D
Tulips are most popular and wildly grown flowers. Tulips are bulbs, possessing modified stems and leaves.
- What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?
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Aleurone cells are the outer cell layer of the endosperm, usually only one cell thick in wheat and the only endosperm tissue alive at maturity. The cell layers of this layer are responsible for the de-novo synthesis of enzyme needed during germination. The chromosome number is 63 of a plant with 42 chromosome in its root tip cells.
Correct Option: B
Aleurone cells are the outer cell layer of the endosperm, usually only one cell thick in wheat and the only endosperm tissue alive at maturity. The cell layers of this layer are responsible for the de-novo synthesis of enzyme needed during germination. The chromosome number is 63 of a plant with 42 chromosome in its root tip cells.
- Which one of the following is a true fruit?
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The fruit is a mature or ripened ovary. When a fruit develops exclusively from the ovary, it is said to be true fruit. When in addition to the ovary, some other floral part also participates in the formation of fruits, then it is known as false fruit. Apple, pear, cashewnut, mulberry etc. are all false fruits.
Correct Option: D
The fruit is a mature or ripened ovary. When a fruit develops exclusively from the ovary, it is said to be true fruit. When in addition to the ovary, some other floral part also participates in the formation of fruits, then it is known as false fruit. Apple, pear, cashewnut, mulberry etc. are all false fruits.
- Which part of the coconut produces coir?
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Coir (Etymological origin: from Tamil and Malayalam - kayar - cord) is a coarse fibre extracted from the fibrous outer shell of a coconut. Coir fibres are found between the husk and the outer shell of a coconut. The individual fibre cells are narrow and hollow, with thick walls made of cellulose. They are pale when immature but later become hardened and yellowed as a layer of lignin is deposited on their walls.
Correct Option: B
Coir (Etymological origin: from Tamil and Malayalam - kayar - cord) is a coarse fibre extracted from the fibrous outer shell of a coconut. Coir fibres are found between the husk and the outer shell of a coconut. The individual fibre cells are narrow and hollow, with thick walls made of cellulose. They are pale when immature but later become hardened and yellowed as a layer of lignin is deposited on their walls.
- Vivipary is
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Vivipary germination is the characteristic mode of seed germination in Rhizophora (Mangrove).
Correct Option: D
Vivipary germination is the characteristic mode of seed germination in Rhizophora (Mangrove).