Question

7. When we observe the lower surface of a leaf through a magnifying lens we see numerous small openings.

Which of the following is the term given to such openings?

(A) Stomata (B) Lamina (C) Midrib (D) Veins

8. In which part of chloroplast does dark reaction take place?

(A)Thylakoids (B) Granum (C) Stroma (D) Peri plastidial space

9. Which of the following statements is /are correct ?

(i) All green plants can prepare their own food.

(ii) Most animals are autotrophs

(iii) Carbon dioxide is not required of photosynthesis

(iv) Oxygen is liberated during photosynthesis

Choose the correct answer from the options below

(A) (i) and (iv) (B) (ii) only (C) (ii) and (iii) (D) (i) and (ii)

10. The swallowed food moves downwards in the alimentary canal because of

(A) Force provided by muscular tongue (B) Flow of water taken with food

(C) Gravitational pull (D) Contraction of muscles in the wall of food pipe

Comprehension – 1

Most of the green plants have usually thousands of stomata per square on their leaf surface. Each pore is

called stomata .It is oval shaped and surrounded by two guard cells .when the guard cells are turgid, the stoma is

open and when they lose water the stoma closes. The Carbon dioxide used in photosynthesis diffuses into leaf

through the stomata and most of the water vapor leaving the plant, and the oxygen from photosynthesis diffuse out

through the stomata

11. Generally the shape of guard cells is roughly

(A) Spherical Shape (B) Kidney Shape (C) Square Shape (D) Triangle Shape

12.The digestive juice secreted by liver is

(A) Gastric juice (B) Succus entericus (C) Intestinal juice (D) Bile juice​

Answer 1

Answer:

Explanation:

7 ans:-      stomata - option  A

8 ans:-      stroma - option C

9 ans:-      (i) and (iv) are correct -  option A

10 ans:-     option D

11  ans:-     option B

12 ans:-     option D

Answer 2

Answer:

7) STOMATA

8)STOMATA

9) (i) and (iv)

10) Contraction of muscles in the wall of food pipe.

Comprehension-1

11) Kidney shape

12) Bile juice

Explanation: HOPE THIS HELPS YOU MARK ME AS THE BRAINLIEST