• Biology - Section 1

Pollination is best defined as

A. transfer of pollen from anther to stigma
B. germination of pollen grains
C. growth of pollen tube in ovule
D. visiting flowers by insects


Plants absorb dissolved nitrates from soil and convert them into

A. free nitrogen
B. urea
C. ammonia
D. proteins


One of the following is not a function of bones.

A. Place for muscle attachment
B. Protection of vital organs
C. Secretion of hormones for calcium regulation in blood and bones
D. Production of blood corpuscles


Photosynthesis generally takes place in which parts of the plant?

A. Leaf and other chloroplast bearing parts
B. stem and leaf
C. Roots and chloroplast bearing parts
D. Bark and leaf


Out of 900 reported species of living gymnosperms, conifers are represented by about 500 species, About 2,50,000 species of angiosperms (flowering plants) have also been reported in the world. The vast and dominant woodlands in Europe, Asia, North America and mountains such as Himalayas are wooded with

A. all gymnosperms, except conifers
B. only angiosperms
C. only conifers
D. angiosperms and all gymnosperms except conifers