Advertisements
Advertisements
Question
What is morula?
Solution
The 16-32 celled stage which develops during cleavage by the end of the 4th day after fertilization is called a morula.
APPEARS IN
RELATED QUESTIONS
What do you mean by DNA?
State the importance of DNA copying.
Why is DNA copying an essential part of the process of reproduction?
Explain the importance of reproduction in organisms.
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 |
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.
What type of fertilisation takes place in birds?
The characteristics transmitted from parents to offspring are present in :
(a) cytoplasm
(b) ribosome
(c) golgi bodies
(d) genes
Define the following:
Regeneration
Give reason for the following:
Vegetative propagation is practised for growing only some type of plants.
If diploid chromosome number in a flowering plant is 12, then which one of the following will have 6 chromosomes?
Explain heterostyly and herkogamy with suitable example.
Draw a well labelled diagram of the monocot seed you have studied.
Nebenkern is ______.
Write two types of reproduction in plants.
Which of the following is diploid at the time of fertilization in a gametophyte of a normal angiosperm?
Which of the following statements about reproduction in humans is correct?
Which of the following nucleus is unlike other nuclei in the female gametophyte of angiosperms?
The statement ‘nothing lives forever, yet life continues’ illustrates the role of ______.
