CSS - PMS - CCE - PCS - General Science
Pollination
Why can cross-pollination increase genetic variation?
A. It combines alleles from different individual plants
B. It prevents recombination
C. It copies one plant exactly
D. It eliminates meiosis
Correct Answer: A
Cross-pollination facilitates gene flow and new genetic combinations.
CSS - PMS - CCE - PCS - General Science
Pollination
Which pollination syndrome often includes brightly colored petals, scent and nectar?
A. Water erosion
B. Wind pollination only
C. Animal pollination
D. Self-incompatibility only
Correct Answer: C
Visual and chemical attractants often recruit animal pollinators.
CSS - PMS - CCE - PCS - General Science
Pollination
Pollination is distinct from fertilization because fertilization is what?
A. Formation of nectar
B. Fusion of male and female gametes
C. Opening of a flower
D. Transfer of pollen only
Correct Answer: B
Pollination delivers pollen; fertilization occurs later when gametes fuse.
CSS - PMS - CCE - PCS - General Science
Pollination
Where is pollen produced in a flower?
A. Ovary
B. Anther
C. Sepal
D. Stigma
Correct Answer: B
Anthers contain pollen-producing microsporangia.
CSS - PMS - CCE - PCS - General Science
Pollination
What is the function of the stigma?
A. To produce seeds directly
B. To receive pollen
C. To perform all photosynthesis
D. To absorb soil water
Correct Answer: B
The stigma is the receptive surface of the pistil/carpel.
CSS - PMS - CCE - PCS - General Science
Pollination
What feature is common in many wind-pollinated flowers?
A. Large quantities of light, dry pollen
B. Bright petals always
C. Strong nectar production always
D. Heavy sticky pollen only
Correct Answer: A
Wind pollination is aided by abundant lightweight pollen.
CSS - PMS - CCE - PCS - General Science
Pollination
Which animal group is especially important as pollinators for many flowering plants?
A. Earthworms only
B. Insects
C. Reptiles only
D. Fish only
Correct Answer: B
Bees and other insects pollinate a large number of flowering plants.
CSS - PMS - CCE - PCS - General Science
Pollination
What is cross-pollination?
A. Transfer of pollen between flowers on different plants of the same species
B. Pollen movement within one anther only
C. Seed dispersal by animals
D. Vegetative propagation
Correct Answer: A
Cross-pollination promotes genetic mixing between plants.
CSS - PMS - CCE - PCS - General Science
Pollination
What is self-pollination?
A. Fusion of two embryos
B. Seed movement by wind
C. Transfer of pollen to the stigma of the same flower or another flower on the same plant
D. Pollen transfer only between different species
Correct Answer: C
Self-pollination occurs within the same plant.
CSS - PMS - CCE - PCS - General Science
Pollination
What is pollination?
A. Seed dispersal only
B. Fusion of gametes
C. Transfer of pollen from anther to stigma in flowering plants
D. Root absorption of water
Correct Answer: C
Pollination precedes fertilization by moving pollen to a receptive female structure.