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प्रश्न
Multiple choice question.
Point out the odd one.
पर्याय
Nucellus
Embryo sac
Micropyle
Pollen grain
उत्तर
Pollen grain.
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संबंधित प्रश्न
What is DNA copying?
Why is DNA copying an essential part of the process of reproduction?
Which life process ensures that a plant or animal species will not disappear from this earth?
What is the name of the reproductive process :
which involves two parents?
What is a clone? Why do offsprings formed by asexual reproduction exhibit remarkable similarity?
Match the organisms given in column I with the methods of reproduction/propagation given in column II :
| Column I | Column II | |
| (i) Plasmodium | (a) Spore formation | |
| (ii) Spirogyra | (b) Leaves | |
| (iii) Jasmine | (c) Regeneration | |
| (iv) Apple tree | (d) Budding | |
| (v) Bryophyllum | (e) Binary fission | |
| (vi) Potatoes | (f) Layering | |
| (vii) Rhizopus | (g) Fragmentation | |
| (viii) Hydra | (h) Tubers | |
| (ix) Planaria | (i) Cuttings | |
| (x) Leishmania | (j) Multiple fission | |
| (xi) Sugar cane | (k) Grafting | |
| (xii) Rose |
Why is variation during reproduction beneficial to the species but not necessarily for the individual?
Fill in the following blank with suitable word :
The union of a sperm nucleus with an egg nucleus is known as.......... and results in a .........egg.
State whether the following statement is true (T) or false (F):
Dogs and cats reproduce from two parents.
Find the odd-one out, giving reason.
Gamete, budding, fragmentation, regeneration.
Define the following:
Regeneration
Name the part of the cell where DNA is located?
The daughter cells produced by asexual reproduction are genetically identical to the parent cell.
Match the following:
| Column ‘I’ | Column ‘II’ |
|
(1) Inhibits plant growth
|
(a) Breaks large fat globules into smaller ones
|
|
(2) Cytokinins
|
(b) Auxins
|
|
(3) Cellular respiration
|
(c) Mitochondria
|
|
(4) Bile
|
(d) Promote cell division
|
|
(e) Abscisic acid
|
Multiple choice question.
Insect pollinated flowers usually posses ______
In vitro pollen germination and pollen tube elongation can be induced by ______.
Self-incompatibility is found in flowers of plants _______.
The single shield-shaped cotyledon in monocot seed is known as ______.
Draw a well labelled diagram of the monocot seed you have studied.
