D. Reproduction
A. Excretion
B. Precipitation
C. Respiration
2. Which type of reproduction involves of union of gametes?
D. Sexual reproduction
A. Asexual
B. Fragmentation
C. Pollination
3. Which of the following is a natural vegetative reproduction?
A. Bulbs
B. Cutting
C. Grafting
D. Layering
4. Which parts of the flower is directly involved in sexual reproduction?
A. Petals and pollen grains
B. Pistil and petals
C. pistil and stamen
D. stamen and sepals
5. Which is NOT an advantage of asexual reproduction?
A. Fast growth and development
B. Genetic variation
C. Perpetuation of successful organism.
D. Production of numerous offspring.​