Ques and Ans: What phylum do starfish belong to?
Options:
- (A) fertile
- (B) animals
- (C) Echinoderm.
- (D) Mollusca.
- (E) Sponge.
- (F) Absorb light
- (G) Annelid.
- (H) a fish
(C)
Logic chain: Echinoderms have a unique water vascular system with tube feet. Each starfish arm is lined with tube feet. Starfish are echinoderms.

Ques and Ans: Some what with feathers are pollinators?
Options:
- (A) bees
- (B) tortoises
- (C) fish
- (D) snakes
- (E) strong
- (F) ducks
- (G) Vanes
- (H) animals
(H)
Logic chain: Some birds are pollinators that co-evolved with plants. Bird A bird is an animal with feathers. Some animals with feathers are pollinators.

Ques and Ans: _ are found mainly in the skin.
Options:
- (A) To keep their body heat.
- (B) Veins and arteries.
- (C) layers of fat
- (D) Leptospirosis
- (E) refraction of light
- (F) Pacinian corpuscles
- (G) major threat to health
- (H) it keeps an organism warm
(F)
Logic chain: Pressure receptors are found mainly in the skin. Pacinian corpuscles are pressure receptors. Pacinian corpuscles are found mainly in the skin.

Ques and Ans: What helps producers make food?
Options:
- (A) Decomposition.
- (B) heat energy
- (C) honeybees
- (D) Chemical energy
- (E) Electrical energy
- (F) animals
- (G) an electric stove
- (H) Power plants
(A)
Logic chain:
Producers make food from inorganic molecules. Decomposition is the breakdown of organic molecules into inorganic molecules. Decomposition helps producers make food.