Biology – general knowledge

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Biology - general knowledge

Question 1 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Plants absorb dissolved nitrates from soil and convert them into
A
free nitrogen
B
urea
C
ammonia
D
proteins
Question 2 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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
Question 3 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Myopia is connected with
A
ears
B
eyes
C
lungs
D
None of these
Question 4 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Plants are killed in winter by frost
A
because of desiccation and mechanical damage to the tissues
B
because no photosynthesis takes place at such low temperature
C
because respiration ceases at such low temperature
D
because there is no transpiration
Question 5 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Mutation is
A
a factor responsible for plant growth
B
a change which affects the offspring of F2 generation only
C
a change that is inherited
D
a change which affects the parents
There are 5 questions to complete.