3. a. Name one organisms that exhibits both plant and animal features (1 mark)b. State three (3) animal features and two (2) plant features possessed by thenamed organism in 3(b) above (5 marks)c. Differentiate between a living and non-living thing in four ways. (4 marks)d. Explain the complexity of organization of life forms in higher organisms. (10 marks)
Question
3. a. Name one organisms that exhibits both plant and animal features (1 mark)b. State three (3) animal features and two (2) plant features possessed by thenamed organism in 3(b) above (5 marks)c. Differentiate between a living and non-living thing in four ways. (4 marks)d. Explain the complexity of organization of life forms in higher organisms. (10 marks)
Solution
a. One organism that exhibits both plant and animal features is Euglena.
b. Animal features possessed by Euglena:
- Euglena can move using a whip-like tail called a flagellum.
- Euglena can detect and respond to light using a light-sensitive spot called an eyespot.
- Euglena can engulf and consume other smaller organisms.
Plant features possessed by Euglena:
- Euglena contains chloroplasts, which allow it to carry out photosynthesis and produce its own food.
- Euglena can reproduce through a process called binary fission, similar to plant cells.
c. Differences between living and non-living things:
- Living things can grow and develop, while non-living things do not.
- Living things can reproduce and pass on their genetic information, while non-living things cannot.
- Living things can respond to stimuli from their environment, while non-living things cannot.
- Living things require energy to carry out their life processes, while non-living things do not.
d. The complexity of organization in higher organisms is evident in their hierarchical structure. Higher organisms, such as animals and plants, are composed of multiple levels of organization, including cells, tissues, organs, and organ systems. Each level has a specific function and contributes to the overall functioning of the organism. This complexity allows for specialization and division of labor, where different cells and organs perform specific tasks to ensure the survival and proper functioning of the organism as a whole. Additionally, higher organisms exhibit complex physiological and behavioral adaptations that enable them to interact with their environment and respond to changes. This complexity of organization is essential for the survival and success of higher organisms in their respective ecosystems.
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