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प्रश्न
The average period of pregnancy in human lasts for ______ days of pregnancy.
पर्याय
280
270
266
290
उत्तर
The average period of pregnancy in human lasts for 280 days of pregnancy.
संबंधित प्रश्न
What do you mean by DNA?
Egg laid after fertilisation is made up of a single cell.
Match items in Column I with those in Column II:
| Column I | Column II | ||
| (a) | Bud | (i) | Maple |
| (b) | Eyes | (ii) | Spirogyra |
| (c) | Fragmentation | (iii) | Yeast |
| (d) | Wings | (iv) | Bread mould |
| (e) | Spores | (v) | Potato |
| (vi) | Rose |
Name two animals which reproduce asexually.
The protozoan having a flagellum at its one end is :
(a) Amoeba
(b) Paramecium
(c) Hydra
(d) Leishmania
Name two animals which undergo external fertilisation.
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.
Write the full form of DNA.
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 number of nuclei present in a zygote is _______.
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.
Which is the most common type of endosperm in angiospermic families?
Write two types of reproduction in plants.
Planaria reproduces asexually by ______.
Assertion and Reason types of Question.
Assertion: In potatoes, shoot arises from eyes.
Reason: Eyes represent the buds.
Assertion and Reason types of Question.
Assertion: Corm is a condensed form of Bulb.
Reason: It has dry and fleshy scale leaves.
Which of the following statements about reproduction in humans is correct?
