Page 33 - Biology - XII
P. 33
VIVA VOCE
Q1. Which type of fl ower/pollination takes place in grasses?
Ans. Flower is anemophilous, pollination is anemophily.
Q2. Give one example of entomophilous fl ower.
Ans. Sunfl ower
Q3. Are maize plants monoecious or dioecious?
Ans. Monoecious
Q4. Where are female fl owers located in a maize plant?
Ans. At the lower part of the plant
Q5. What is pollination?
Ans. The process of transfer of pollen grains from anthers to stigma of a fl ower is called pollination.
Q6. What are anemophilous fl owers?
Ans. Flowers adapted to pollination by wind are called anemophilous fl owers.
Q7. Name any one anemophilous fl ower.
Ans. Maize fl ower
Q8. Mention one adaptation of anemophilous fl ower.
Ans. Anemophilous fl ower is small and inconspicuous.
Q9. What are fl owers pollinated by insects called?
Ans. Entomophilous fl owers
Q10. Why are rice fl owers not coloured/attractive?
Ans. Because these are wind pollinated fl owers.
Q11. Mention a reason for birds visiting fl owers.
Ans. Some birds visit fl owers to feed on nectar.
Q12. Maize has male and female fl owers in the same plant, but distantly located. How does the
pollination take place?
Ans. It has anemophilous fl ower. Hence, it is pollinated by wind.
Q13. Some fl owers are unisexual. What does it mean?
Ans. Male and female fl owers are separate.
Q14. Bird pollinated fl owers are usually ___________ and ___________ producing.
Ans. Large in size, nectar
Q15. Which type of fl ower is China rose (shoe fl ower) in respect to pollination?
Ans. Entomophilous
Q16. A fl ower has the following adaptations: (i) brightly coloured, (ii) secretes nectar. Which type of
fl ower in respect to pollination is it?
Ans. Entomophilous
Q17. Brassica campestris and Hibiscus rosa sinensis fl owers are ___________ pollinated.
Ans. insect
Q18. Some fl owers emit sweet smell at night. How are these fl owers pollinated?
Ans. By insect
32