Biology Practice Test – Cells and its Environment

Which of the following statements is correct about organs?

A. They are composed of specialized cells
B. They perform a certain overall function
C. They are not found in plants
D. Unicellular animals have few organs

How many conjugants are involved in sexual reproduction of paramecium?

Which of the following environmental conditions is ideal for plant cells to remain turgid?

A. Hot, dry weather      B. Windy weather      C. Cold, dry weather      D. Cool, humid weather

The epidermis of the mammalian skin is an example of a tissue because the cells ______

A. prevent light from passing through them.
B. has a similar structure and function.
C. prevents excessive loss of water.
D. are impregnated with keratin

A major difference between plants and animals is that _______

A. there is free movement in animals while this is limited in plants.
B. there is indefinite growth in animals only.
C. animals consume inorganic materials as food, while plants consume organic materials.
D. animals give up carbon-dioxide as a waste product of respiration while plants do not