Plant needs and life cycles Knowledge-Based Download PDF

Questions

1. 1.

   Why is seed dispersal an advantageous adaptation in the life cycle of flowering plants?

   • A) It guarantees that all dispersed seeds will successfully germinate at the same time.
   • B) It allows the parent plant to reabsorb nutrients previously allocated to the seeds.
   • C) It reduces competition between the seedlings and the parent plant for essential resources such as light, water, and space.
   • D) It prevents pollen grains from fertilizing ovules produced on the same flower.
2. 2.

   In the life cycle of a flowering plant, which floral structure typically enlarges and develops into a fruit after fertilization occurs?

   • A) Petal
   • B) Anther
   • C) Ovary
   • D) Stigma
3. 3.

   Which atmospheric gas is directly taken up through the stomata of plant leaves to provide the carbon atoms needed to synthesize organic sugars during photosynthesis?

   • A) Oxygen
   • B) Nitrogen
   • C) Carbon dioxide
   • D) Water vapor
4. 4.

   Which process in the life cycle of a flowering plant describes the transfer of pollen from an anther to a receptive stigma?

   • A) Fertilization
   • B) Seed dispersal
   • C) Germination
   • D) Pollination
5. 5.

   During which stage of a flowering plant's life cycle does the dormant embryo resume growth and emerge from the seed coat using stored nutrient reserves?

   • A) Pollination
   • B) Germination
   • C) Fertilization
   • D) Seed dispersal