Ques and Ans: What unwanted creature would be found on the surface of a human body using it as a host?
Options:
- (A) Tapeworm.
- (B) Leeches.
- (C) Pesticides
- (D) animals
- (E) insects
- (F) Hookworm
- (G) bacteria
- (H) Bracelet.
(B)
Logic chain: Some parasites live on the surface of their host. Leeches are external parasites. Leeches are on the surface of the host .

Ques and Ans: What swims from male to female reproductive organs in fertilization?
Options:
- (A) ovaries
- (B) barnacles
- (C) fur seals
- (D) eggs
- (E) gastropod shells
- (F) male gametes
- (G) kinetic energy
- (H) female gametes
(F)
Logic chain: Sperm had to swim from male to female reproductive organs for fertilization. Gametes in males are called sperm, and in women commonly referred to as eggs. Male gametes swim from male to female reproductive organs for fertilization.

Ques and Ans: When gametes fuse, the resultant zygote is:
Options:
- (A) fertile
- (B) diploid
- (C) Flowers
- (D) grow
- (E) infected
- (F) It expands
- (G) pollen
- (H) seeds
(B)
Logic chain: Fertilization occurs when a sperm and an egg fuse to form a diploid zygote. Familiar types of gamete include the female ovum , or egg cell, and the male sperm cell. Fertilization occurs when the male and female gametes fuse to form a diploid zygote.

Ques and Ans: What organelles that are found in the cells of mosses.
Options:
- (A) chloroplasts
- (B) epidermal
- (C) sensory neurons
- (D) an organism's body
- (E) more abundant
- (F) Epidermis
- (G) produce light
- (H) it needs them
(A)
Logic chain:
Chloroplasts are organelles that are found in the cells of plants and algae. Mosses are nonvascular plants. Chloroplasts are organelles that are found in the cells of mosses.