Biology

In plant cells the role of the membrane is played by the?

A. nucleolus B. cell wall C. cytoplasm D. mitochondrion Correct Answer: Option B B. cell wall

6 years ago

Viruses are economically important because they?

A. do not have cell structures B. can only reproduce inside living cells. C. cause diseases in plants and animals…

6 years ago

A beaker of pond water containing few specimens of Euglena was placed in a dark room for two weeks. At the end of this period, the specimens of Euglena were still alive because they were?

A. able to carry out holozoic nutrition. B. able to carry out photosynthesis using carbon dioxide in the pond water…

6 years ago

A flowering plant having both the male and female flowers on the same plant is said to be?

A. Regular B. Irregular C. Monoecious D. Dioecious Correct Answer: Option C C. Monoecious Explanation Flowering plants having both the…

6 years ago

Thunderstorm can be beneficial to plants because it?

A. adds line to the soil B. kills the pest that attacks crops C. destroys some of the major crops…

6 years ago

The study which involves the inter-relationship between groups of organisms or species of organisms living together in an area is?

A. Autecology B. Ecological niche C. Synecology D. Ecosphere Correct Answer: Option C C. Synecology Explanation Synecology involves the inter-relationship…

6 years ago

Which of the following organs can be considered vestigial in humans but functional in other mammals?

A. The liver B. Appendix C. Rectum D. Stomach Correct Answer: Option B B. Appendix Explanation Vestigial organs are remaining…

6 years ago

The basis of growth involves the following processes except?

A. Cell reduction B. Cell division C. Cell enlargement D. Cell differentiation Correct Answer: Option A A. Cell reduction Explanation…

6 years ago

In the theory of use and disuse, Lamarck proposed that evolution occurred because of the following except?

A. There is natural selection of offspring B. There is great changes in the environment C. Organism develop specialized characters…

6 years ago

In an ecosystem, the organism which changes light energy into stored chemical energy is the?

A. Consumer B. Producer C. Decomposer D. Carnivore Correct Answer: Option B B. Producer Explanation In an ecosystem, the organism…

6 years ago