2025/2026 SS1 First Term Examination on Biology

1. A group of closely related organisms capable of interbreeding to produce fertile offsprings are known as —

2. Which of the following characteristics do fungi share with animals?

3. Euglena can be classified as an animal because of the possession of —

4. One of the differences between plants and animals is that

5. Flatworms are classified as —

6. The organism at the organ level of organisation of life is

7. The disadvantage of complexity of organization in the higher organism is that it leads to

8. Which of the following is a tissue?

9. Which of the following organisms has the largest surface area to volume ratio?

10. The organism with spiral chloroplasts and nucleus suspended by cytoplasmic strands is

11. Which of the following statements about protoplasm of a cell is not correct?

12. Cells that utilize a lot of energy are characterized by the presence of a large number of

13. The network of a double membrane that conveys materials through the cytoplasm is the

14. Which of the following organelles are likely to be present in cells that are actively respiring and photosynthesizing?

15. The first scientist to describe the cell was

16. Active transport differs from passive transport in that active transport

17. Which of the following processes takes place when a plant cell is put in a hypotonic solution

18. In which of the following yam tissues will osmosis occur?

19. The cell membrane of a cell is said to be semi-permeable because

20. The rate of diffusion of molecules between two media will be higher if

21. In testing for starch in a leaf, the leaf is boiled in alcohol to

22. The source of energy required by plants during food production is

23. The mode of nutrition common to green plants is

24. The following are required for primary production in plants except

25. Analysis of the gut content of an animal showed that it contained small pieces of bone, seeds, roughages, and insects. The animal is likely to be a/an

26. The color that is associated with a positive iodine test is

27. Which part of a plant cell contains cellulose

28. All the following organelles have membranes except

29. Clotting of blood is a function of

30. A bacterial cell differs from eukaryotic cell by having not

SECTION B (Answer All)

1. The branch of biology that deals with the principles of classification of organisms is known as —

2. In the binomial system of naming organisms, the second name is called the —

3. In which levels of classification of living things are the members most similar?

4. — is an example of a tissue in man

5. The major site for photosynthesis in a leaf is the —

6. The enzyme that catalyzes the fixation of carbon during photosynthesis is —

7. Plants absorb Nitrogen in the form of —

8. The two groups of angiosperms are — and —

9. — is the largest phylum in the animal kingdom

10. The sugar made by plants during photosynthesis is formed from — and —

SECTION C Answer only 4 questions

1a. List 3 characteristics of living organisms 1b. Explain briefly the characteristics listed above 1c. In a tabular form, state 4 differences between plants and animals 1di. Name one organism that exhibits both plant and animal features 1dii. Mention four animal features, and two plant features possessed by the organism named in (di) above

2. List and explain the levels of organization in living organisms giving example each

3. What is cell? b. Describe the structure and state the function of each of the following: i. Nucleus ii. Mitochondria c. Make a labelled diagram 8cm to 10cm long of the Euglena.

4. Describe in details the experiment to demonstrate the presence of starch in a green leaf.

5. Explain the following terms a. Plasmolysis b. Haemolysis c. Turgidity d. Flaccidity e. Passive transport

6. Define the following ai. Chemosynthesis aii. Photosynthesis b. Write the chemical equation of photosynthesis c. Explain in details the light reaction stage of photosynthesis