The spores of mucor are dispersed by

• A. water
• B. wind
• C. insects
• D. explosive mechanism

The branch of Biology that deals with the principles of classification of organisms is known as

• A. biological index
• B. nomenclature
• C. taxonomy
• D. ecology

The concept of tropic structure of a community emphasizes

• A) the dominant form of vegetation
• B) the main predator
• C) the feeding relationship within a community
• D) the richness of species in the community

Which of the following is TRUE of the process of conjugation in Paramecium?

• A. Micronucleus disintegrates
• B. Each ex-conjugant divides only once
• C. Macro nucleus undergoes division
• D. Each micronucleus divides twice

Which of the following substances is not an excretory product in mammals?

• A. Carbon dioxide
• B. Water
• C. Faeces
• D. Urea

The mechanism of opening and closing of stomata in plants is based on

• A. turgidity and diffusion
• B. turgidity and flaccidity
• C. osmosis and diffusion
• D. diffusion and flaccidity

In which of the following organisms is ammonia excreted as a waste product?

• A. Man
• B. Bird
• C. Amoeba
• D. Spirogyra

Which of the following activities constitutes biological control?

• A. A small bony fish transported on the back of a shark
• B. Adding manure to crops in a garden
• C. Tilapia feeding on the larvae and pupae of mosquito
• D. A vulture feeding on the carcass of a goat

Climax communities in a biotic succession are usually characterized by

• A. a constant change in the appearance of the communities
• B. different species that are constantly changing
• C. a stable composition of plant and animal species
• D. rapid changes in the plant and animal species

Which of the following groups of invertebrates reproduces by budding?

• A. Arthropoda
• B. Annelides
• C. Mollusces
• D. Coelenterata