MCQ ON CENTRIOLES class 11 for NEET

MCQ ON CENTRIOLES class 11 for NEET | CENTRIOLES class 11 | MCQ CENTRIOLES with Answer | Check the below NCERT MCQ question for class 11 Biology based on the with Answers.

MCQ on CENTRIOLES class 11 Biology with answers were prepared based on the latest pattern.We have provided class 11 Biology MCQs question with Answers to help students understand the concept very well.

MCQ ON CENTRIOLES is useful for NEET / CSIR / UGC / CBSE / ICSE / AIIMS / EXAM / AFMC EXAM / STATE LEVEL MEDICAL EXAM 2022-23 , 2023-24

INTRODUCTION:-

Centrioles are noticeable with both light and electron microscope.
The centrioles occur in nearly all animal cells and in motili plant cells , such as zoospores of algae, sperm cells of fern and motile algae.
They are absent in amoeba , prokaryotic cells, higher gymnosperms and all angiosperms.

The centrioles commonly occurs in pairs . A pair of centrioles is called a diplosome.
An interphase undividing cell has a pair of centrioles usually near the nucleus.

They lie in small mass of specialised , distinctly staining cytoplasm that lacks other cell organelles and is called centrosphere, or kinoplasm or cytocentrum .The centrioles and the centrosphere are together to as centrosome.

Before cell division , the centrioles duplicate so that a dividing cell has a pair of centrioles at each pole of the spindle.

MCQ ON CENTRIOLE S class 11 for NEET

1. The centrio are noticeable with

(a) light microscope
(b) electron microscopes
(c) both a and b
(d) compound microscope

Ans (c) both a and b

2. The centrioles occur in

(a) all animal cells
(b) motile plant cells
(c) sperm cells of ferns
(d) all the above

Ans. (d) all the above

3. Centrals are absent in

(a) amoeba
(b) prokaryotic cells
(c) higher gymnosperms
(d) all the above

Ans. (d) all the above

4. A pair of centrioles is called

(a) diplosome
(b) kinoplasm
(c) centrosphere
(d) centrosome

Ans.(a) diplosome

5. The centrioles and the centrosphere are together referred to as

(a) centrosome
(b) profilaments
(c) basal granules
(d) flagella

Ans.(a) centrosome

6. Each centriole is made of

(a) 9 microtubules
(b) 7 microtubules
(c) 6 microtubules
(d) all the above

Ans.(a) 9 microtubules

7. The microtubules of the centrioles are composed of

(a) tubulin
(b) some lipids
(c) ATPase enzyme
(d) All the above

Ans.(d) All the above

8. New centrioles are synthesize from their subunits

(a) alpha dimers
(b) beta dimers
(c) both a and b
(d) basal granules

Ans.(c) both a and b

9. They are called micro tubule organising centre

(a) centrioles
(b) mitochondria
(c) plastids
(d) ribosomes

Ans. (a) centrioles

10. They provide basal bodies which give rise to cilia and flagella

(a) basal granules
(b) centrioles
(c) mitochondria
(d) all the above

Ans. (b) centrioles

11. which of the spermatozoon give rise to the axial filament of the tail.

(a) mitochondria
(b) golgibody
(c) centrioles
(d) distal centrioles

Ans.(d) distal centrioles

12. Centrosome are present

(a) in plant cell only
(b) in animal cell
(c) in both plant and animal cells
(d) none of these

Ans . (b) in animal cell

13. Which help organize spindle fibres and astral rays during cell division.

(a) centrioles
(b) golgi body
(c) mitochondria
(d) ribosome

Ans.(a) centrioles

14. Which phase of cell has a pair of centrioles usually near the nucleus.

(a) interphase
(b) metaphase
(c) anaphase
(d) telophase

Ans. (a) interphase

15.Each microtubule in centrioles is triplet is about ……..wide.

(a) 250 A
(b) 300 A
(c) 200 A
(d) all the above

Ans.(a) 250 A

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16.Three microtubules of a triplet are often called

(a) centrosphere
(b) centrosome
(c) subtubules
(d) profilaments

Ans.(c) subtubules