ICSE Class 6 Biology - The Flower - Test 4 (Expert)
1. A plant produces very few seeds when only self-pollination occurs. This suggests the plant mainly depends on:
A. Wind dispersal
B. Cross-pollination
C. Water transport
2. If pollen grains do not reach the stigma, the plant will fail to form:
A. Leaves
B. Roots
C. Seeds
3. A sudden decrease in bee population will mainly affect:
A. Pollination
B. Water absorption
C. Root growth
4. Flowers with bright petals are mostly adapted for:
A. Wind pollination
B. Insect pollination
C. Self-absorption
5. Wind-pollinated flowers usually produce pollen that is:
A. Heavy and sticky
B. Colored and large
C. Light and dry
6. If fertilization does not occur, the ovules will:
A. Not develop into seeds
B. Become petals
C. Turn into leaves
7. The first step in sexual reproduction of flowers is:
A. Germination
B. Pollination
C. Root formation
8. Nectar in flowers mainly helps to:
A. Absorb water
B. Produce seeds directly
C. Attract pollinators
9. A flower without fragrance is usually pollinated by:
A. Wind
B. Animals only
C. Roots
10. After fertilization, the swelling of ovary shows formation of:
A. Leaf
B. Fruit
C. Stem
11. The embryo inside a seed develops into:
A. Flower
B. Fruit wall
C. New plant
12. If pollination fails, the plant will not produce:
A. Seeds
B. Roots
C. Leaves
13. Self-pollination mainly results in:
A. More variation
B. Similar offspring
C. No seeds
14. Cross-pollination is useful because it:
A. Stops growth
B. Reduces seeds
C. Increases variation
15. Pollen grains land on the:
A. Stigma
B. Ovary
C. Sepal
16. The pollen tube grows to reach the:
A. Leaf
B. Ovule
C. Stem
17. Fertilization results in formation of:
A. Leaf bud
B. Root tip
C. Zygote
18. Flower structure is mainly related to:
A. Mode of pollination
B. Soil type
C. Root length
19. The main outcome of flower reproduction is:
A. Leaf growth
B. Formation of new plants
C. Water storage
20. The flower is best described as a:
A. Water organ
B. Storage organ
C. Reproductive organ