A) chlorophyII B) large vacuole C) Cell membrane D) Cellulose cell wall
A) expand and then shrink B) expand and then burst C) enlarge and then become turgid D) decrease in size and become flaccid
A) greater amount of DNA is involved in sexual reproduction B) genetic materials come from parents of two different species C) sexual reproduction is a lengthy process D) gametes of parents have different genetic composition
A) pelvic girdle B) lower arm C) pectoral girdle D) upper arm
A) heart B) liver C) testes D) pancreas
A) hepatic vein B) hepatic artery C) hepatic portal vein D) mesenteric artery
A) insulin B) thyroxine C) parathormore D) adrenaline
A) adrenal gland B) skin C) hypothalamus D) pituitary gland
A) three B) one C) two D) four
A) thyroxine B) parathormore C) adrenaline D) insulin
A) cockroach B) grasshopper C) butterfly D) locust
A) there is an increase in substrate concentration B) the atmospheric pressure is altered C) the optimum temperature is attained D) the ph of the medium is altered
A) carbon (IV) oxide B) sunlight C) water D) wind
A) by utilizing its store energy B) in a synthesized form, from other living organisms C) from other organisms in exchange for some products D) by synthesizing simple substances using energy
A) reduction of carbon (IV) oxide to form carbohydrate B) ormation of two molecules of phosphoglyceric acid C) splitting of water molecules to form hydrogen ions D) breaking down of ATP molecules to produce energy
A) venus flytrap B) Utricularia C) gloriosa D) pitcher plant
A) habitat B) population C) succession D) community
A) grasses available to grasshoppers B) hawks would increase C) grasshoppers would increase D) grasshoppers would decrease
A) no gills B) fore limbs C) lateral line D) no scales
A) multiple epidermis B) heavily lignified tissue C) finely divided leaves D) succulent stem
A) parasitism B) mutualism C) predation D) commensalism
A) likely to disappear from the surface of the earth B) reproducing profusely in an area C) dangerous to humans and attacking other animals D) dangerous to humans and attacking other animals
A) Eating uncooked meatf/fdysentery, cholera. food poisoning. B) Living near dirty gutter / Lung cancer, syphilis, river blindness C) Having multiple sexual partners / liver cirrhosis, syphilis, AIDS D) Smoking cigarette / Liver cirrhosis. Lung cancer, AIDS
A) use of cover crops B) mulching C) discouraging poaching D) crop rotation
A) garbage B) water C) forest D) soil
A) chiasmata are not formed B) Four daughter cells are produced C) Bi-valents are not formed D) It does not lead to variation
A) lead to agglutination B) change the blood group C) facilitate dissolution of clot D) have no effect on blood composition
A) produce one generation in a large period B) produce numerous seeds within a short time C) have a relatively short life cycle D) have a small number of chromosomes
A) it is caused by recessive genes B) it is more common in males than in females C) two sickle cell carrier parents may have a sickling child D) it is caused by sex-linked genes
A) BBbb B) BB C) bb D) Bb
A) it will result in sickness and probably death of the offspring B) it will hinder her from having blood transfusion from her husband C) it may affect her childbearing ability D) her children may all resemble her husband
A) butterfly B) termite C) housefly D) cockroach
A) change of habitat B) climate change C) reduction in population D) gene mutation
A) great changes in the environment result in corresponding changes in species B) frequently used organs become well developed while the ones not used become vestigial C) well developed acquired characters are inheritable D) survivors in a competitive community must have inherited useful traits
A) transverse and cross B) transverse and longitudinal C) cross and transverse D) longitudinal and transverse
A) asexual reproduction B) bud formation C) gamete formation D) sexual reproduction
A) tissue B) system C) organ D) cell
A) Euglenophyta B) Rhizopoda C) Rhodophyta D) Ciliophora
A) II B) IV C) III D) I
A) Excretion B) Reproduction C) Respiration D) Locomotion
A) presbyopia B) astigmatism C) hypermetropia D) myopia
A) concave lens B) convex lens C) cylindrical lens D) bifocal lens
A) use a non-green plant for the experiment B) cover the culture vessel with opaque paper C) keep cotton wool around the seedling to make it dry D) aerate the solution daily
A) algal growth in the solution that used up the nutrients B) inability of the plant to make food due to lack of sunlight C) inadequate supply of water to the plant D) excess supply of nutrients to the plant
A) used for killing prey in water B) effective in scratching the soil for food C) used as a paddle for swimming D) used as a bait to catch fish in water
A) variation B) courtship behaviour C) inheritance D) cell theory
A) cytoplasm and nucleus B) cell wall and vacuole C) cytoplasm and vacuole D) nucleus and cell wall
A) I B) II C) III D) IV
A) I B) IV C) II D) III
A) Euglena B) Spirogyra C) Volvox D) Paramecium
A) plasma membrane B) nuclear membrane C) endoplasmic reticulum D) mitochondrion
A) Unripe pawpaw fruit B) Yam tuber C) pig's bladder D) Sheet of cellophane
A) Respiration does not occur in the mould B) Respiration can take place in yeast cells in the absence of oxygen C) The yeast cells carried out photosynthesis while the mould did not D) Photosynthesis does not take place in the absence of oxygen
A) Xylem B) Phloem C) Collenchyma D) Parenchyma
A) lung book B) air sac C) lung D) trachea
A) urea B) urine C) uric acid D) ammonia
A) bladder B) pelvis C) medulla D) capsule
A) having specific effect B) release of secretion into ducts C) transportation by blood to target organ D) secretion of hormones
A) optic nerves B) spinal cord C) cerebrum D) cerebellum
A) lens become more convex B) lens become more concave C) suspensory ligament becomes tight D) lens gets a longer focal length |