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प्रश्न
In the diagram given in Figure 12.2 label the parts marked (a), (b) and (c).
उत्तर
In the given diagram
(a) is a pollen grain,
(b) is pollen tube and
(c) is zygote.
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संबंधित प्रश्न
Write two differences between binary fission and multiple fission in a tabular form.
What is the name of asexual reproduction method in Leishmania?
What is meant by multiple fission? Name one organism which reproduces by the process of multiple fission.
The micro-organism which reproduces by multiple fission is the one which causes the disease known as :
(a) Kala-azar
(b) marasmus
(c) malaria
(d) amoebiasis
Fill in the blank:
The amount of cytoplasm in the parent cell is _____ than the amount in the bud.
State whether the following statement is true (T) or false (F):
Bacteria and yeast reproduce by sexual reproduction.
What is vegetative propagation? List with brief explanation three advantages of practising this process for growing some types of plants. Select two plants from the following which are grown by this process:
Banana, Wheat, Mustard, Jasmine, Gram.
A blue colour flower plant denoted by BB is crossbred with that of white colour flower plant denoted by bb.
(a) State the colour of flower you would expect in their F1 generation plants.
(b) What must be the percentage of white flower plants in F2 generation if flowers of F1 plants are self-pollinated?
(c) State the expected ratio of the genotypes BB and Bb in the F2 progeny.
What are the objectives of plant hybridisation?
The form of vegetative reproduction of plants where seeds are formed without fusion of gametes is called
