The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which during pollination, brings genetically different types of pollen grains to stigma, is:
1. | Chasmogamy | 2. | Cleistogamy |
3. | Xenogamy | 4. | Geitonogamy |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn some members of which of the following pairs of families, pollen grains retain their viability for months after release?
1. Poaceae; Solanaceae
2. Rosaceae; Leguminosae
3. Poaceae; Rosaceae
4. Poaceae; Leguminosae
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is incorrect for wind-pollinated plants?
1. Well exposed stamens and stigma
2. Many ovules in each ovary
3. Flowers are small and not brightly colored
4. Pollen grains are light and non-sticky
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn some plants, the thalamus contributes to fruit formation. Such fruits are termed as:
1. False fruits
2. Aggregate fruits
3. True fruits
4. Parthenocarpic fruits
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPrefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGiven below are two statements:
I: Cleistogamous flowers are invariably autogamous
II: Cleistogamy is disadvantageous as there is no chance for cross pollination
In the light of the above statements, choose the correct answer from the options given below:
1. I is incorrect but II is correct
2. Both I and II are correct
3. Both I and II are incorrect
4. I is correct but II is incorrect
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich part of the fruit, labelled in the given figure makes it a false fruit?
1. D-Seed
2. A-Mesocarp
3. B-Endocarp
4. C-Thalamus
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhat will be the ploidy of endosperm of a seed produced after crossing tetraploid female plant with tetraploid male plant?
1. Pentaploid
2. Hexaploid
3. Diploid
4. Triploid
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following set represents the correct labelling of A,B, C and D with respect to the given diagram?
1. A- Seed Coat, B- Cotyledon, C- Endosperm, D - Hypocotyle
2. A -Seed Coat, B- Scutellum, C- Endocarp, D - Mesocarp
3. A- Seed Coat, B- Scutellum, C- Microphyle, D - Endocarp
4. A-Pericarp, B - Coleoptile
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyBee-keeping helps to improve the yield of following crops Except ____________.
1. Jowar
2. Sunflower
3. Apple
4. Mustard
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology