Question 12

Plastid differs from mitochondria on the basis of one of the following features. Mark the right answer.

(a) Presence of two layers of membrane

(b) Presence of ribosome

(c) Presence of thylakoids

(d) Presence of DNA

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Solution

(c) Presence of thylakoids, the structural elements of chloroplast, differs then (plastids) from mitochondria. Thylakoids are flattened sacs stocked one above the other to form grana. They help in photosynthesis

Rest of the features- presence of two layers of membrane, ribosome and presence of DNA are common to both plastids and mitochondria.

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Q. Common features of chloroplast and mitochondria are
(A) Production of ATP
(B)

N A D P H_{2}

formation
(C) Presence of

70

S ribosomes
(D) Presence of Circular naked DNA.

Question 10
Green colour of leaves is due to presence of the pigment___

(a) chlorophyll
(b) ribosomes
(c) mitochondria
(d) chloroplast

Question 18
Which one of the following feature is not a characteristic of protochordata?

(a) Presence of notochord
(b) Bilateral symmetry and coelom
(c) Jointed legs
(d) Presence of circulatory system

Question 10
Green colour of leaves is due to presence of the pigment___

(a) chlorophyll
(b) ribosomes
(c) mitochondria
(d) chloroplast

Question 18
Which one of the following feature is not a characteristic of protochordata?

(a) Presence of notochord
(b) Bilateral symmetry and coelom
(c) Jointed legs
(d) Presence of circulatory system

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Question 12 Plastid differs from mitochondria on the basis of one of the following features. Mark the right answer. (a) Presence of two layers of membrane (b) Presence of ribosome (c) Presence of thylakoids (d) Presence of DNA

Question 12

Plastid differs from mitochondria on the basis of one of the following features. Mark the right answer.

(a) Presence of two layers of membrane

(b) Presence of ribosome

(c) Presence of thylakoids

(d) Presence of DNA