Question

18. Organelle lacking cell membrane is-(a)
Golgi body. (b) Chloroplast, (c) Nucleus,
(d) Ribosome.

19. Which of the following is not a
function of vacuole ? (a) Storage, (b)
Providing targidity of the cell,
(c) Excretion, (d) Locomotion

20. Which of the following are covered by
a single membrane ? (a)
Mitochondria, (b) Plastid, (C) Lysosome, (d)
Ribosome

21. Which of the following cell organelles
are
not bounded by a membrane? (a)
Nucleus, (b) Lysosome. (c) Ribosome, (d)
Endoplasmic reticulum

22. Bone
and cartilage belong to which tissue ? (a)
Nervous tissue, (b) Connective tissue. (c)
Epithelial tissue, (d)
Muscular tissue.​

Answer 1

Answer:

18. ans is d) ribosome

19. d) locomotion

20. c) Lysosome

21.a) Nucleus

22.b) connective tissue

Explanation:

18.It does not have cell membrane.

19. locomotion is not a  function of vacuole.

20. Lysosome is covered by a single membrane.

21. Nucleus is not bounded by a membrane.

22.Bone  and cartilage belong to connective tissue.