Correct Answer: B. palm oil and carrot

Correct Answer: D. lack chlorophyll

Correct Answer: C. Bowman

Correct Answer: C. potassium

Correct Answer: C. adrenalin and kidney

Explanation

Adrenalin, also known as epinephrine, is not secreted by the kidney. It is secreted by the adrenal glands, specifically the adrenal medulla. The adrenal glands are small, triangular glands located on top of both kidneys. Therefore, the option 'Adrenalin and kidney' is incorrect

Correct Answer: B. has a reduced stem and thick fleshy leaves

Correct Answer: B. The levels of energy flow within an ecosystem

Correct Answer: B. reabsorption

Explanation

(a)(i) Components of an ecosystem are:

(1) Producers.

(2) Consumers.

(3) Decomposers.

(ii) The producers or green plants use carbon (iv) oxide, water, chlorophyll and sunlight as a source of energy to produce carbohydrate. The consumers or animals feed on the producers or their products. Consumers release carbon (iv) oxide to the plants to take in. Decomposers or micro-organisms break down dead plants and other organisms to release nutrients which are absorbed by plants

(b) Steps for studying plants and animals in a community:

(i) Mapping out or selection or demarcating of a particular area (ii) Measurement of ecological factors.

(iii) Collection of specimens.

(c)(i) competition: Inadequate supply of nutrients, light, water and food leads to competition which results in survival of the fittest. This means that those that cannot stand the test of competition die. This eventually leads to reduction in population. Lack of these necessities also leads to migration which reduces population size.

(ii) pathogens: These are disease causing agents or organisms which kill other organisms in a population thereby reducing the population. Attack by pathogen can result in the development of resistant strains which eventually lead to a growth of disease free population.

(iii) Water: All living organisms need water for survival.

(1) Water is needed for metabolism.

(2) Lack of water leads to food scarcity and death, thereby reducing population.

(3) Adequate supply of water leads to increase in food production and supply which eventually leads to increase in population.

(4) Excess water supply may result in flooding which brings about displacement and reduction in population.

Correct Answer: B. Myopia

Explanation

Myopia, also known as nearsightedness, is an eye defect characterized by the inability of the eye to focus light on the retina. Myopia is characterized by the ability to see nearby objects clearly while distant objects appear blurred. It occurs when the eyeball is elongated or the cornea is too curved, causing the incoming light to focus in front of the retina instead of directly on it.