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Question
Distinguish between self-pollination and cross-pollination.
Solution
In self-pollination, only one or two flowers borne on the same plant are involved, whereas in cross-pollination two flowers borne on two plants of same species are involved.
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RELATED QUESTIONS
Match the following:
| Column A | Column B |
| (i) Stigma | (a) Neuron |
| (ii) Pepsin | (b) Carpel |
| (iii) Dendrites | (c) Protein |
| (d) Stamen |
Name the parts labelled as A, B, C and D in the diagram given below:-
In the following diagram showing the structure of embryo of a dicot seed, what are the parts marked I, II and III sequentially?
A student has to perform the experiment "To identify the different parts of an embryo of a dicot seed." Select from the following an appropriate group of seeds:
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(b) Red kidney bean, maize, gram
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A student identified the various parts of an embryo of a gram seed and listed them as given below :
(I) Testa
(II) Plumule
(III) Radicle
(IV) Cotyledon
(V) Tegmen
Out of these the actual parts of the embryo are :
(A) I, II, III
(B) II, III, IV
(C) III, IV, V
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You are asked by your teacher to study the different parts of an embryo of a gram seed. Given below are the steps to be followed for the experiment:
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III. Take some dry gram seeds in a petri dish.
IV. Drain the excess water.
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Name the swollen lower part of the carpel.
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Fill in the following blank with suitable word :
Pollen grains contain ............ gametes of a plant.
Fill in the following blank with suitable word :
Flowering plants reproduce by ...........method of reproduction.
Draw a neat sketch of the stamen of a flower. Mark in it filament and anther.
Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.
What type of plants reproduce by sexual reproduction method?
What is pollination? How does pollination occur?
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(a) vas deferens
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(c) ovary
(d) style
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State whether the following statement is true (T) or false (F):
Stamens make egg cells.
Mention the function of Flower.
What are the male and female gametes in a flowering plant?
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Draw a diagram of the longitudinal section of a flower and label on it sepal, petal, ovary and stigma.
List any two differences between pollination and fertilisation.
Sketch the labeled diagram:
Flower with its sexual reproductive organs
Fill in the blank by selecting suitable word:
Transfer of pollen grains from the anther to the stigma is known as______________.
Find the odd one out:
Find an odd one out.
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a. Discuss the first event and write the types.
b. Mention the advantages and the disadvantages of that event.
Identify the female gametophyte in angiosperms.
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Sketch and label the essential and accessory whorls of flower.
