Which of the following processes does not occur during photosynthesis?
- A. Energy from sunlight is absorbed
- B. Carbon (IV) oxide is evolved
- C. oxygen is evolved
- D. water is split
The eye defect caused by an uneven curvature of the cornea or lens or both is
- A. myopia
- B. presbyopia
- C. astigmatism
- D. hypermetropia
Stunted growth and small yellow leaves in plants are symptoms of the deficiencies of
- A. nitrogen
- B. iron
- C. sulphur
- D. magnesium
An example of a process that involves osmosis is the
- A. movement of water from root hairs into cortical cell
- B. reabsorption of food nutrients from the kidney into blood capillaries
- C. translocation of starch from leaves to all parts of a plant
- D. movement of digested food from ileum into blood capillaries
Which of the following characteristics shows discontinuous variation in plants?
- A. Colour of flower
- B. Leaf size
- C. Height of plant
- D. fruit size
Placentation in fruits is referred to as the
- A. arrangement of ovules in the ovary of a flower
- B. part of the ovary where the ovules originate and remain till maturity
- C. ovules borne on a central column of tissues in an ovary
- D. formation of a single carpel joined at the two edges of an ovule
Study the list of organisms below and use them to answer the questions.
I-Hydra
II-Owl
III-Snake
IV-Snail
The Phylum of the organism labeled IV is
- A. Platyhelminthes
- B. mollusca
- C. Arthropoda
- D. Coelenterata
Study the list of organisms below and use them to answer the questions.
I-Hydra
II-Owl
III-Snake
IV-Snail
The arrangement of the organisms in order of increasing complexity is
- A. II-III-I-IV
- B. I-IV-III - II
- C. I-II-III-IV
- D. IV-III-II - I.
The diagram below is an illustration of a structure in the skeletal system of humans. Study it and answer the question
An individual was involved in a car accident and the illustrated structure was badly injured. Which of the following structures would most likely be affected?
- A. Clavicle, tongue and pelvis
- B. Eye, cerebellum and ear
- C. Ear, brain and hinge joint
- D. Lumbar, eye and teeth
The diagram above is an illustration of a structure in the skeletal system of humans. Study it and answer the question
the illustrated structure is a part of the
- A. appendicular skeleton
- B. axial skeleton
- C. axis vertebrae
- D. cervical vertebrae
Which of the following soil types have a high capillarity?
- A. Sand and clay
- B. loam and sand
- C. silt and sand
- D. silt and clay
The diagrams below are illustrations of organisms in a habitat. Study them and answer the question, the producer in the diagram is
- A. IV because it is the largest organism in the diagram
- B. IV because it is the organism that receives the highest amount of sunlight
- C. I because it uses sunlight to manufacture food
- D. I because it contains the least amount of energy
The diagrams below are illustrations of organisms in a habitat. Study them and answer the question,
The feeding relationship between the organisms labelled III and IV in the diagrams is
- A. predation
- B. mutualism
- C. parasitism
- D. saprophytism
Which of the following organisms would be the producer in a food chain?
- A. Goat
- B. maize
- C. man
- D. bacterium
The rate of decomposition of dead organisms is faster in the tropical rainforest than in other biomes because
- A. of consistent cool temperature
- B. of availability of moisture
- C. of the relatively constant day light.
- D. there are more plants
Which of the following hormones is wrongly paired with its secretory organ?
- A. oestrogen and ovary
- B. Oxytocin and hypothalamus
- C. adrenalin and kidney
- D. insulin and pancreas
A Rhesus negative woman may experience stillbirth of the second child that is Rhesus positive because
- A. the foetus is deprived of nourishment
- B. they have poor circulatory system
- C. the blood of the foetus might clump
- D. the woman is susceptible to diseases during pregnancy
Which of the following factors is the main problem facing xerophytes?
- A. Conservation of excess water
- B. competition for sunlight
- C. lack of adequate water
- D. formation of poor roots
Which of the following instruments is not used in measuring abiotic factors in a habitat?
- A. microscope
- B. Wind vane
- C. thermometer
- D. hygrometer
A vestigial structure in humans is
- A. earlobe
- B. gallbladder
- C. tailbone
- D. villus
What is the probability that a pregnancy would result in a male child?
- A. \(\frac{3}{4}\)
- B. \(\frac{1}{2}\)
- C. 1
- D. \(\frac{1}{4}\)