How many gametes are produced in the pollen grain of a flowering plant before fertilization?
- A. one
- B. two
- C. three
- D. four
The diagram above is an illustration of a type of eye defect in humans. Study it and answer this question.
The eye defect can be corrected by the use of?
- A. convex lens
- B. concave lens
- C. bifocal lens
- D. cylindrical lens
The diagram above is an illustration of a type of eye defect in humans. Study it and answer this question.
The eye defect illustrated in the diagram is?
- A. hypermetropia
- B. astigmatism
- C. presbyopia
- D. myopia
The temperature control centre in mammals is located in the?
- A. skin
- B. hypothalamus
- C. pituitary gland
- D. adrenal gland
Which of the following hormones is suddenly secreted into the bloodstream of a frightened person?
- A. insulin
- B. adrenaline
- C. thyroxine
- D. parathormore
Detoxification of urea takes place in the?
- A. pancreas
- B. heart
- C. liver
- D. testes
The diagram above is an illustration of the longitudinal section of a mammalian organ. Study it and answer this question.
What is the main function of the organ?
- A. Excretion
- B. Respiration
- C. Reproduction
- D. Locomotion
The diagram above is an illustration of the longitudinal section of a mammalian organ. Study it and answer this question.
Which of the labeled parts is the cortex?
- A. I
- B. II
- C. III
- D. IV
The blood vessel which carries blood from the alimentary canal to the liver is the?
- A. hepatic artery
- B. hepatic vein
- C. hepatic portal vein
- D. mesenteric artery
Radius and ulna are bones of the?
- A. pectoral girdle
- B. upper arm
- C. pelvic girdle
- D. lower arm
Offspring formed by sexual reproduction exhibit more variation than those formed by asexual reproduction because
- A. greater amount of DNA is involved in sexual reproduction
- B. gametes of parents have different genetic composition
- C. genetic materials come from parents of two different species
- D. sexual reproduction is a lengthy process
A plant cell placed in a solution with a higher water potential will
- A. expand and then shrink
- B. enlarge and become turgid.
- C. expand and then burst
- D. decrease in size and become flaccid
The organism belongs to the Phylum
- A. Rhizopoda
- B. Ciliophora
- C. Euglenophyta
- D. Rhodophyta
The level of organization of the organism is
- A. tissue
- B. cell
- C. organ
- D. system
The diagram below is an illustration of a Fungus. Study it and answer questions 4 to 6
Which of the following statements about the structure labeled III is correct?
- A. secretes digestive enzymes into the substrate
- B. absorbs mineral salts from the soil
- C. forms the root hairs of the organism
- D. develops into stolon
The diagram below is an illustration of a Fungus. Study it and answer questions 4 to 6
The structure labeled II is the
- A. spore
- B. stolon
- C. columella
- D. sporangium
The diagram below is an illustration of a Fungus. Study it and answer questions 4 to 6
The structure labelled I is associated with
- A. sexual reproduction
- B. asexual reproduction
- C. bud formation
- D. gamete formation
The diagrams below are illustrations of different sections of a particular fruit. Study them and answer questions 2 and 3
The fruit that has the illustrated sections is a
- A. hesperidium
- B. capsule
- C. drupe
- D. cypsela
The diagrams below are illustrations of different sections of a particular fruit. Study them and answer questions 2 and 3
The sections in X and Y respectively, are
- A. longitudinal and transverse
- B. transverse and longitudinal
- C. cross and transverse
- D. transverse and cross
Which of the following organelles is common to both plant and animal cells
- A. Cellulose cell wall
- B. Chlorophyll
- C. Cell membrane
- D. Large vacuole
Study carerully Specimens H, J, Kand L and use them to answer the following question:
(a) Make a drawing 8-10cm long of the longitudinal section of specimen H and label fully.
(ii) What type of fruit is specimen H?
(ii) State two other examples of the type of fruit to wnich specimen H belongs.
(iv) Is specimen H a true fruit or a false fruit?
(v) Give one reason for your answer in a(iv) above.
(vi) State the food classes present in specimen H.
(b)(i) State one(1) feature common to specimens J, K and L.
(ii) State two observable characteristic features each of specimens J, K and L.
(iii) State the mode of vegetative propagation of specimens K and L.
(C) State the biological significance of specimens K.