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