QUESTIONS
- With reference to the term Biology, state the meaning of the following:- (2 mks)
- bios –
- logos –
- State the two major branches of Biology and give their meaning. (4 mks)
- Complete the table below by giving the meaning of the terms: (5 mks)
Branch of Biology Meaning Microbiology Anatomy Physiology Entomology Cytology - Outline four benefits of study of biology. (4 mks)
- With reference to characteristics of living organisms complete the table below. (8 mks)
Characteristic Definition/Meaning Reproduction Movement Excretion Nutrition Respiration Growth and development Gaseous exchanges Irritability (Responsiveness) - State the importance of the following in living organisms. (6 mks)
- Reproduction –
- Movement –
- Excretion –
- Explain how plants and animals differ with reference to the following characteristics. (10 mks)
NB: Marks are linked in each characteristic.
Nutrition Plants Animals Irritability Growth Excretion Movement - Explain how the following apparatus are used in collection and observation of specimens. (6 mks)
- A pooter –
- A bait trap –
- A pit fall trap –
- A fish net –
- A sweep net –
- Pair of forceps –
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- Define the following terms: (2 mks)
- Taxonomy –
- Taxonomic units –
- Outline the seven taxonomic units of classification from the largest to the smallest. (7 mks)
- Complete the table below kingdoms should be in the order of simplest to most complex organisms. (10 mks)
Kingdom Example of organism
- Define the following terms: (2 mks)
-
- Identify the organisms shown in the photographs. (3 mks)
- If fish in diagram A is the drawing of object B, calculate the drawing magnification. (3 mks)
- Identify the organisms shown in the photographs. (3 mks)
MARKING SCHEME
- With reference to the term Biology, state the meaning of the following:- (2 mks)
- bios – life
- logos – knowledge
- State the two major branches of Biology and give their meaning. (4 mks)
- Botany - Branch of biology that deals with study of plants.
- Zoology - Branch of biology which deals with study of animals.
- Complete the table below by giving the meaning of the terms: (5 mks)
Branch of Biology Meaning Microbiology Study of microscopic organisms Anatomy Study of structure of living organisms Physiology Study of body functions Entomology Study of insects Cytology Study of cells - Outline four benefits of study of biology. (4 mks)
- Solving environmental problems
- Career subject
- Acquire scientific skills
- Promotes cooperation in solving common problems (pertinent and emerging problems)
- With reference to characteristics of living organisms complete the table below. (8 mks)
Characteristic Definition/Meaning Reproduction Process by which living things give use to new individuals of their own. Movement Change in position of whole or part of an organism Excretion Removal of metabolic wastes from body of an organism. Nutrition Process by which living organisms acquire & utilize nutrients Respiration Chemical breakdown of food to release energy Growth and development Growth-Permanent increase in size of an organism
Development-Permanent increase in complexity of an organismGaseous exchanges Process of movement of respiratory gases across a respiratory surface. Irritability (Responsiveness) Ability of organism to detect and respond to change in environment - State the importance of the following in living organisms. (6 mks)
- Reproduction – Increase in population, Sustains species
- Movement – Get resource from environment, Escape harmful stimuli, Reach out mates for reproduction
- Excretion – Prevents accumulation of metabolic waste to toxic level which would, harm the organism.
- Explain how plants and animals differ with reference to the following characteristics. (10 mks)
NB: Marks are linked in each characteristic.
Nutrition Plants Animals Nutrition Are antotrophic
Manufacture their food for water & CO2Are heterotrophic.
Feed on complex food materials from plants and animalsIrritability Show response
No specific receptorsRapid response to stimulus
Have specific receptionGrowth Growth takes place at meristemetic tissue only Growth occurs all over the body uniformly. Excretion Lack specialized excretory organs Have highly developed excretory organs. Movement Occurs only in parts Both locomotory and parts movement. - Explain how the following apparatus are used in collection and observation of specimens. (6 mks)
- A pooter – Sucking small animals from surfaces.
- A bait trap – Attract and trap small animals eg rats.
- A pit fall trap – Catching crawling animals.
- A fish net – Trapping small water animals eg fish.
- A sweep net – Catching flying insects.
- Pair of forceps – Picking up small crawling animals.
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-
- Define the following terms: (2 mks)
- Taxonomy – Science of classification
- Taxonomic units – Group into which organisms are placed in classification.
- Outline the seven taxonomic units of classification from the largest to the smallest. (7 mks)
- Kingdom
- Phylum
- Class
- Order
- Family
- Genus
- Species
- Define the following terms: (2 mks)
- Complete the table below kingdoms should be in the order of simplest to most complex organisms. (10 mks)
Kingdom Example of organism Monera Bacteria Protoctista Algae, amoeba, paramecium Fungi Moulds, yeast, mushrooms, puffballs etc Plantae Maize, beans Animalia Man, bees, lion
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- Identify the organisms shown in the photographs. (3 mks)
- Clamydomonas
- Hydra
- Paramecium
- If fish in diagram A is the drawing of object B, calculate the drawing magnification. (2 mks)
Magnification = length of image = 86cm = X2
length of object 43cm
- Identify the organisms shown in the photographs. (3 mks)
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