OBJECTIVES
1. Growth includes the following processes except
A. differentiation.
B. enlargement.
C. mitosis.
D. meiosis.
2. Two organelles directly involved in mitotic cell division are
A. nucleus and mitochondrion.
B. ribosome and w nucleus.
C. centriole and golgi apparatus.
D. nucleus and centriole.
3. Which of the following structures is only formed during cell division in animal cells?
A. Cell membrane.
B. Cytoplasm.
C. Centro some.
D. Ribosome.
The diagram below represents the phenomenon of growth in a meristematic cell of a plant. Use it to answer questions 4 & 5
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4. The part labelled II in the diagram is
A. centriole.
B. chloroplast.
C. chromatid.
D. tonoplast.
5. The part labelled I is called the
A. nucleolus.
B. centromere.
C. centriole.
D. spindle.
6. The graph below represents the growth pattern of an animal. Which of the following groups of animals shows this pattern of growth?
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A. Cestoda.
B. Reptilia.
C. Amphibia.
D. Insecta.
7. The following are methods of measuring plant growth except
A. determining the fresh and dry weights of the plant.
B. counting the number of fruits produced.
C. measuring the increase in height of the shoot.
D. measuring the length and breadth of a leaf.
8. The basis of growth involves the following processes except
A. cell reduction.
B. cell division.
C. cell differentiation.
D. cell enlargement.
9. Which of the following processes does not contribute towards growth
A. Cell division.
B. Cell enlargement.
C. Cell differentiation.
D. Cell plasmolysis.
10. The aspects of growth in living organisms include all the following processes except
A. increase in dry weight.
B. reversible increase in size.
C. irreversible Increase in length.
D. increase in number of cells.
11. Which of the following is described as an increase in dry weight?
A. Reproduction.
B. Absorption.
C. Ingestion.
D. Growth.
12. Growth in animals differs from that in plants because growth in
A. plants is intercalary.
B. animals is apical.
C. plants is from within.
D. plants is indefinite.
THEORY
1. (a) What is growth? (b) State two differences each between: growth in plants and animals
2. State two differentes between growth in plants and growth in animals
3. What is the effect of gravity on plant growth?