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Question
__________ is present in unisexual flower.
Options
Both androecium and gynoecium
Only androecium
Only gynoecium
Androecium or gynoecium
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Solution
Androecium or gynoecium is present in unisexual flower.
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Flowering plants reproduce by ...........method of reproduction.
Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.
Give some examples of different modes of fertilisation in nature?
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Which of the following statements are true for flowers?
(i) Flowers are always bisexual.
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(iii) They are produced in all groups of plants.
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(i) They possess both stamen and pistil
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(a) (i) and (iv)
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(d) (i), (iii) and (iv)
The flask-shaped organ A at the centre of a flower is surrounded by a number of little stalks B having swollen tops which lie just inside the ring of petals.
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In what ways is fertilisation in a plant different from fertilisation in a human?
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Unisexual flowers are found in
- mulberry
- mustard
- pea
- sunflower
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Seeds are formed from________.
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Anther, pollen grain, ovule male gamete
Mention the function of Flower.
Mention the function of Stigma.
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Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:
Pollen grain, male gamete, female gamete, ovary.
Distinguish between unisexual and bisexual flowers giving one example of each. Draw a diagram showing process of germination of pollen grains on stigma and label the following parts:
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Identify the odd. Stigma, Style, Pollen, Ovary.
Mention pollination types.
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Find an odd one out.
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Pollen grains from anther are transferred to the stigma.
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How many middle layers are generally present in the wall of the anther lobes?
Pineapple fruit develops from ______.
In human beings, fertilization occurs in the ______
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- They possess either stamen or pistil
- They exhibit cross pollination
- Unisexual flowers possessing only stamens cannot produce fruits
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