Multiple Choice Questions on Flower Structure and Functions:
1. Flower is a_________
A. Modified cone
B. Modified spike
C. Modified branch system
D. Modified reproductive shoot
Answer: D
2. Flower in which only set of one essential organ develops are called________
A. Unisexual
B. Monoecious
C. Dioecious
D. Polygamous
Answer: A
3. Various colours in flower fruit and seeds are due to presence of which pigment?
A. Anthocyanin
B. Chlorophyll
C. Chloroplast
D. a,b,c-all
Answer: A
4. A flower that can complete self-pollination must be________
A. monoecious flowers
B. bisexual flower
C. dioecious flowers
D. unisexual flower
Answer: B
5. The main part of flower is_______
A. Flower stalks and receptacles
B. Calyx and corolla
C. Stamens and pistils
D. Ovary and ovule
Answer: C
6. In a flower, what will develop into fruit in the future is_______
A. Ovary wall
B. Fertilized egg
C. ovule
D. ovary
Answer: D
7. False fruit is a fruit which develops from_________
A. Ovary
B. Any part of the flower except the ovary
C. Aporcarpous carpellary
D. Syncorpous carpellary
Answer: B
8. A flower which has all the usual parts sepals, petals, stamens and carpel is called_______
A. hermaphrodite
B. Complete
C. Pistilate
D. Incomplete
Answer: A
9. The main function of the flower is_____
A. Attract insects
B. Can produce leaves
C. Can produce seeds and fruits for reproduction
D. Both A and C
Answer: D
10. The pistil consists of_______
A. Anthers and filaments
B. Stigma, style and ovary
C. Style and ovary
D. Anthers and Styles
Answer: B
11. Which of the following structural features do the flowers of entomophilous plants have that attract animals to pollinate them?
A. bright colors
B. sweet nectar
C. fragrant smell
D. All of these
Answer: D
12. Without any artificial treatment, a flower can bear fruit and seeds. Among the following statements, the most reasonable explanation for this is_______
A. This flower must have pistils
B. This flower must have stamens
C. This flower must have both pistils and stamens
D. This flower is not necessarily fertilized
Answer: C
13. According to the different types of flowers pollination can be divided into________
A. Self-pollinated and cross-pollinated flowers
B. Self-pollinating and entomophilous flowers
C. Cross-pollinated and wind-pollinated flowers
D. Entomophilous and wind-pollinated flowers
Answer: A
14. The most important part of a flower is the stamen, because it_______
A. Bright colors, easy to attract insects
B. Has a fragrance that attracts insects
C. Directly related to the formation of fruits and seeds
D. located in the central part of a flower
Answer: C
15. Which of the following statements is correct_________
A. A flower capable of self-pollination must be a bisexual flower
B. Hermaphroditic plants are generally self-pollinating
C. Peach and apricot flowers rely on insect pollination, while wheat and corn rely on wind pollination
D. Both A and C
Answer: D
16. If the pistil of peach flower A is removed before flowering, the stamen of peach flower B is removed, and peach flower C is not treated. Cover the three flowers A, B and C with transparent plastic bags respectively, and tie the bag tightly. The result is_______
A. A cannot bear fruit, B cannot bear fruit, C can bear fruit
B. A can't get results, B can get results, C can't get results
C. A can't get results, B can get results, C can get results
D. A fails, B fails, C fails
Answer: D