Home
Class 11
BIOLOGY
Centrosome undergo duplication during (i...

Centrosome undergo duplication during (i) of (ii) and begin to move towards opposite poles of the cell during (iii) state of (iv).

A

`{:(" (i)"," (ii)"," (iii)"," (iv)"),("S phase","Interphase","Prophase","Mitosis"):}`

B

`{:(" (i)"," (ii)"," (iii)"," (iv)"),("S phase","Interphase","Anaphase","Mitosis"):}`

C

`{:(" (i)"," (ii)"," (iii)"," (iv)"),("Prophase","Mitosis","Metaphase","Mitosis"):}`

D

`{:(" (i)"," (ii)"," (iii)"," (iv)"),("Prophase","Mitosis","Anaphase","Mitosis"):}`

Text Solution

Verified by Experts

The correct Answer is:
A
In animal cells, during the S phase of interphase, DNA replication begins in the nucleus and the centriole duplicates in the cytoplasm. These duplicated centrioles move towards opposite poles of the cell in prophase of mitosis.
Promotional Banner

Similar Questions

Explore conceptually related problems

Mention the reactions occuring at (i) anode (ii) cathode, during working of a mercury cell. Why does the voltage of a mercury cell remain constant during its operation?

According to IUCN, some of the extinctions include (i) Dodo (ii) Indian gazelle (iii) Thylacine (iv) Steller's sea cow (a) (i), (ii), (iii) and (iv) (b) (ii) and (iv) (c) (i),(iii) and (iv) (d) (iii) and (iv)

Different cells have different sizes. Arrange the following cells in an ascending of their size and select the correct option. (i) Mycoplasma (ii) Ostrich egg (iii) Human RBCs (iv) Bacteria

Study the given differences between primary sludge and activated sludge and select the incorrect ones. Primary Sludge Activated sludge (i) It is sludge formed during primary sewage treatment. It is sludge formed during secondary sewage treatment. (ii) It possesses flocs of decomposer microbes. It does not possess flocs of decomposer microbes. (iii) It does not require aeration. Formation of activated sludge requires aeration. (iv) A lot of decomposition occurs during formation of primary sludge. Very little decomposition occurs during formation of activated sludge.

Memebers of Phycomycetes are found in (i) aquatic habitats (ii) on decaying wood (iii) moist and damp places (iv) as obligate parasites on plants. Choose from the following options.1.None of the above, 2.(i) and (iv), 3.(ii) and (iii), 4.All of the above

Study the following statements regarding food chains and select the correct ones. (i) Removal of 80% tigers from an area resulted in greatly increased growth of vegetation. (ii) Removal of most of the carnivores resulted in an increased population of deers. (iii) The lenght of food chains is generally limited to 3-4 trophic levels due to energy loss. (iv) The lenght of food chains may vary from 2 to 8 trophic levels. A) i and ii B) ii and iii C) i and iii D) iii and iv

From the statements given below, choose the option that are true for a typical female gametophyte of a flowering plant. (i) It is 8-nucleate and 7-celled at maturity. (ii) It is free-nuclear during the development. (iii) It is situated inside the integument but outside the nucellus. (iv) It has an egg apparatus situated at the chalazal end.

During nodule formation in leguminous plants, an infection thread is produced carrying the __(i)__ into the __(ii)__ of the root, where they initiate the nodule formation in the __(iii)__ of the root. Fill up the blanks by choosing the correct option.