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प्रश्न
In the figure given alongside, the parts marked A, B and C are sequentially :
(a) cotyledon, plumule and radicle
(b) plumule, radicle and cotyledon
(c) plumule, cotyledon and radicle
(d) radicle, cotyledon and plumule
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उत्तर
(c) plumule, cotyledon and radicle
A represents the plumule which forms the shoot. B represents the cotyledon and C represents the radicle which forms the roots.
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संबंधित प्रश्न
(i) Name the part marked 'A' in the diagram.
(ii) How dose 'A' reachese part 'B'?
(iii) State the importance of the part 'C'.
(iv) What happens to the part marked 'D' after fertilisation is over?
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:
(a) Pea, gram, wheat
(b) Red kidney bean, maize, gram
(c) Maize, wheat, red kidney bean
(d) Red kidney bean, pea, gram
Mention the changes a flower undergoes after fertilisation.
State the function of flowers in the flowering plants.
What is the name of female organ of a flower (other than carpel)?
Fill in the following blank with suitable word :
The male organ of reproduction in the flower is the.......... .
What is made in ovary of a flower?
What type of plants reproduce by sexual reproduction method?
Give one example each of unisexual and bisexual flowers. Differentiate between the two types of pollination that occur in flowers. What happens when a pollen lands on a suitable stigma? Write about the events that occur till the seed formation in the ovary.
Explain the process of fertilisation in flowers.
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:
(a) Female germ cell
(b) Male germ cell
(c) Ovary
Describe an activity to demonstrate phototropism.
Sketch the labeled diagram:
Flower with its sexual reproductive organs
Differentiate between self-pollination and cross-pollination.
Distinguish between self-pollination and cross-pollination.
Where does the endothecium layer of anther lobes is present?
Generally, in a pollen tube, which of the following moves to the tip of the tube?
What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its roots tip cells?
State the number of sets of chromosomes present in a zygote.
The figure below shows the concept of double fertilization. Complete the flow chart showing the progress at each step:
