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)
Explanation for the Ans above: [[Echinoderms have a unique water vascular system with tube feet. Each starfish arm is lined with tube feet. Starfish are echinoderms.]]

Ques and Ans: What are genes that are located on the same molecules of dna complexed with proteins called?
Options:
- (A) bioaerosols
- (B) solid, liquid, gas
- (C) interact
- (D) sensory neurons
- (E) organs
- (F) deltas
- (G) more abundant
- (H) linked genes
(H)
Explanation for the Ans above: [[Genes that are located on the same chromosome are called linked genes. Chromosomes are molecules of DNA complexed with proteins. Genes that are located on the same molecules of DNA complexed with proteins. are called linked genes.]]

Ques and Ans: Introns are areas that
Options:
- (A) it keeps an organism warm
- (B) Plant reproduction
- (C) the wearing away of rock
- (D) do not code for protein
- (E) Something coming from a gland
- (F) Plant growth is reduced
- (G) allow growth
- (H) produce offspring
(D)
Explanation for the Ans above:
[[Introns are regions that do not code for proteins. An area is a rectangular region of cells. Introns are areas that do not code for proteins.]]