Question 1
State the importance of the following parts of a microscope
- Clip.
- Coarse adjustment knob
Answer
- Hold the slide firmly on the stage
- Raises or lowers the body tube for longer distance to bring the image into focus
Question 2
- Explain why larmacks theory of evolution was not accepted by the modern Biologists.
- Define the following terms
- Analogus structures
- Divergent evolution
Answer
- Acquired characteristics cannot be inhibited; if they don’t affect the genotypes
-
- Analogus Structure-Are structures from different embryonic origin that are modified to perform some function
- Divergent evolution-basic structural forms are modified to give rise to various differences-modified to perform different functions
Question 3
State the functions of the following plant tissues
- Collenchyma
- Sclerenchyma.
Answer
- Collenchyma-for strengthening
- Sclerenchyma-for strengthening
Question 4
State two importance of roughages in the process of digestions of food.
Answer
-Add bulk to food
-Promote peristalsis
-Promote peristalsis
Question 5
Identify the cells that produce the following
- Mucus
- Pepsin and renin
- Hydrochloric acid
Answer
- Mucus-goblet alls
- Pepsin/rennin-peptic cells
- Hydrochloric acid-oxyntic cells