A fertilized embryo sac of an angiosperm contains:
I. Haploid cells
II. Diploid cells
III. Triploid cells
1. I and II only
2. I and II only
3. II and III only
4. I, II and III
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe intine of the pollen grain is a:
1. Thick and discontinuous layer made of sporopollenin
2. Thick and continuous layer made of sporopollenin
3. Thin and discontinuous layer made of cellulose and pectin
4. Thin and continuous layer made of cellulose and pectin
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn the monosporic embryo sac of a flowering plant, the number of nuclei that get surrounded by cell walls and thus are organized into cells is:
1. 5
2. 6
3. 7
4. 8
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFemale flowers remain submerged in water and the pollen grains are released inside the water in:
1. Sea grasses
2. Vallisneria
3. Water lily
4. Water hyacinth
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyScientists are trying to transfer apomictic genes into hybrid varieties of several of our food and vegetable crops so that:
1. They get resistance against common pathogens
2. The yield of these plants can be increased many folds
3. Hybrid seeds need not be produced every year
4. Their germplasm is easily stored in labs for further research
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is the most common abiotic pollinating agent?
1. Insects
2. Birds and bats
3. Wind
4. Water
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe asexual production of seeds is called as:
1. Adventition
2. Fragmentation
3. Self-fertilization
4. Apomixis
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe ovule of an angiosperm is technically equivalent to
(1) megasporangium
(2) megasporophyll
(3) megaspore mother cell
(4) megaspore
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMegasporangium is equivalent to
(1) embryo sac
(2) fruit
(3) nucellus
(4) ovule
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following may require pollinators, but is genetically similar to autogamy?
(1) Geitonogamy
(2) Xenogamy
(3) Apogamy
(4) Cleistogamy
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology