Biology Past Questions And Answers
Many diseases caused by bacteria can be treated and cured by using
- A. antiseptics
- B. antibiotics
- C. antigens
- D. antibodies
Deoxygenation blood flows into the right and left lungs through the
- A. pulmonary vein
- B. vena cava
- C. pulmonary artery
- D. subclavian vein
When a cut is made on the trunks of certain trees, the milky fluid exuded is called
- A) rubber
- B) resin
- C) alkaloid
- D) latex
Diagrams X and Y above are illustrations of transverse sections of a part of plants, Study them and answer this question.
The part responsible for conducting water and dissolved mineral salts from the soil to the leaves is labelled
- A. I
- B. II
- C. III
- D. IV
Which of the following animals has homodont dentition?
- A. Rat
- B. Man
- D. Pigeon
- C. Lizard
Habitats are generally classified into
- A. biotic and abiotic
- B. aquatic and terrestrial
- C. aboreal and marine biomes
- D. microhabitats and macrohabitats
The opening and closing of the stoma are regulated by
- A. transpiration
- B. respiration
- C. diffusion
- D. osmosis
Alternation of asexual modes of reproduction is found in
- A. blue,green algae
- B. euglena
- C. fern
- D. maize
Which of the following is the correct route of transmission of impulses along a reflex arc?
- A. Receptor ? sensory neurone ? synapse ? intermediate neurone ? synapse ? motor neurone ? effector
- B. Receptor ? motor neutron e synapse ? intermediate neurone ? synapse ? sensory neurone effector
- C. Receptor ? synapse ? sensory neurone ? intermediate neurone ? synapse ? effector ? motor neurone
- D. Effector ? motor neurone ? synapse ? sensory neurone ? synapse ? intermediate neurone ? receptor
_________ is not a non-seed plant.
- A) fern
- B) conifer
- C) cycad
- D) none of the above