Here are the solutions to the biology questions:

Here are the solutions to the biology questions:

1. Plasmodium is a parasitic protozoan that causes malaria.

   • The correct option is C.
   • C. a protozoan

2. A saprophyte obtains nutrients by decomposing dead organic matter. This mode of nutrition is called saprophytic nutrition.

   • The correct option is D.
   • D. Saprophytic

3. The possession of endosperm provides a food source for the developing embryo, which is crucial for the survival and establishment of flowering plants in a terrestrial environment.

   • The correct option is C.
   • C. Possession of endosperm

4. This question is a duplicate of question 2. A saprophyte obtains nutrients by decomposing dead organic matter, which is a characteristic of saprophytic nutrition.

   • The correct option is D.
   • D. Saprophytic

5. Spinal nerves originate from the spinal cord, which is part of the central nervous system.

   • The correct option is D.
   • D. Spinal cord

6. Abscisic acid (ABA) is a plant hormone that plays a key role in leaf senescence and abscission (leaf fall).

   • The correct option is C.
   • C. Abscisic acid

7. A leaf with a large lamina and a prominent mid-rib is characteristic of a simple leaf. Compound leaves have multiple leaflets.

   • The correct option is D.
   • D. Simple

8. This question is a duplicate of question 6. Abscisic acid (ABA) is the plant hormone responsible for leaf fall.

   • The correct option is C.
   • C. Abscisic acid

9. A group of closely related organisms capable of interbreeding to produce fertile offspring are defined as a species.

   • The correct option is C.
   • C. a species

10. The rectum is the final section of the large intestine that stores feces before elimination.

    • The correct option is A.
    • A. Rectum