How many of the following structures are synthesised by microtubules?

Centrioles, basal body, cilia, flagella, spindle fibres

(1)5

(2)4

(3)3

(4)2

Which of the following is the structural and functional unit of bacterial flagella and cilia

(1)axon

(2)axoneme

(3)flagellin

(4)All of the above

Which of the following is true about axoneme except

(1) It has nine doublets of peripheral microtubules

(2)2 centrally located microtubule

(3)nine radial spokes

(4)central sheath is absent

Cilium and flagellum emerge from centriole-like structure called as

(1)basal body

(2)shaft

(3)basal plate

(4)All of these

Which of the following is true about centrosome

(1)membraneless organelle

(2)contains two centrioles

(3)surrounded by amorphous pericentriolar

(4)All of these

The arrangement of peripheral microtubule in centrioles is

(1)9 as triplets

(2)9 as doublets

(3)9 as singlet

(4)Both A and B

Which of the following is true about centrioles?

(1)It lacks microtubule in the centre

(2)Hub is proteinaceous

(3)It forms the body of cilia or flagella and spindle fibres

(4)All of the above

Which of the following is true for vacuole

(1)It is present in both plants and animals

(2)Central vacuole is present in plant

(3)It occupies 90% volume of the plants

(4)All of these

In plant cell the concentration of ions is more in

(1)cytoplasm

(2)vacuoles

(3)equal in both

(4)nucleus

The contractile vacuole

(1) is present in Amoeba

(2)helps in osmoregulation

(3)helps in excretion

(4)All of the above