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Question
What is hilum with respect to ovule?
Solution
Hilum is the point of attachment of funiculus to the main body of ovule.
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RELATED QUESTIONS
State the importance of DNA copying.
Which type of reproduction :
involves gametes?
Why are budding, fragmentation and regeneration, all considered to be asexual type of reproduction?
Which of the following organisms reproduce by sexual method and which by asexual method?
Amoeba, Cats, Humans, Hydra, Birds
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 |
Asexual reproduction is :
(a) a fusion of specialised cells
(b) a method by which all types of organisms reproduce
(c) a method producing genetically identical offspring
(d) a method in which more than one parent are involved
Name two animals which undergo internal fertilisation?
Find the odd-one out, giving reason.
Gamete, budding, fragmentation, regeneration.
Differentiate between the following:
Asexual reproduction and sexual reproduction.
Explain the role of DNA in the process of reproduction of the cell.
Give reason for the following:
Vegetative propagation is practised for growing only some type of plants.
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
|
Name the factors which take part in this process.
Multiple choice question.
Insect pollinated flowers usually posses ______
Multiple choice question.
In ovule, meiosis occurs in ______
The number of meiotic and mitotic divisions necessary for development of female gametophyte in angiosperms is ______.
Identify the odd one with respect to pollinating agent.
Assertion and Reason types of Question.
Assertion: Corm is a condensed form of Bulb.
Reason: It has dry and fleshy scale leaves.
