The nephridia in the earthworm form part of the?
- A. reproductive system
- B. respiratory system
- C. circulatory system
- D. excretory system
A farmer’s assumption that the seed from a good harvest will produce a good yield is explained by the theory of
- A. evolution
- B. adaptation
- C. variation
- D. heredity
A phenotypic character with intermediate forms that can be graded from one extreme to the other is referred to as?
- A. discontinuous variation
- B. continuous variation
- C. a mutant
- D. a genome
The uniqueness of an individual organism in a population is accounted for by?
- A. evolution
- B. variation
- C. adaptation
- D. mutation
The major cause of global warming is the?
- A. burning of fossil fuel
- B. construction of dams
- C. use of electricity
- D. exploration of space
I. Onchocerciasis
II. Schistosomiasis
III.Salmonellosis
IV. Meningitis
which of the diseases listed above are associated with water?
- A. I and II only
- B. II, III and IV
- C. I, II and III
- D. II and IV
Mass of crucible = 10g
Mass of crucible and soil before heating = 29g
Mass of a crucible and soil after heating = 18g
From the information above, determine the percentage of water in the given soil sample?
- A. 20%
- B. 25%
- C. 40%
- D. 60%
Which of the following biomass could be characterized by very low rainfall,cold nights, hot days, and fast blooming plants?
- A. northern guinea savanna
- B. sounthern guinea savanna
- C. tropical desert
- D. montane forest
In fresh water marshes and swamps, the most important abiotic factors that organisms have to adapt to is?
- A. nature of substratum
- B. high salinity
- C. high temperature
- D. low pH
A marine protozoan is likely to have no contractile vacuole mainly because the cytoplasm is
- A. isotonic to sea water
- B. hypotonic to sea water
- C. hypertonic to sea water
- D. impervious to sea water
The association between bacteria residing in the rumen of the ruminant is?
- A. parasitism
- B. predation
- C. saprophytism
- D. mutualism
The most important ecological factor in a terrestrial environment is?
- A. rainfall
- B. humidity
- C. wind
- D. soil
In a bean seed, absorption of water at the beginning of germination is through the?
- A. hilium
- B. micropyle
- C. testa
- D. plumule
The reproductive system of a male mammal is made up of?
- A. claspers, prostrate, gland, sperm duct and vas deferens
- B. testis, prostrate gland, sperm duct and penis
- C. oviduct, urethra, testis and sperm duct
- D. testis, uterus, prostrate gland and sperm duct
The axial skeleton is found in the
- A. skull, ribs, vertebral column and breast bone
- B. skull, humerus,vertebral column and ribs
- C. breastbone, clavicle, ribs and vertebral column
- D. femur, sternum,ulna and skull
In insects, the structure that performs the same function as the kidney in man is the?
- A. nephridrium
- B. flame cell
- C. malphigian tubule
- D. trachea
The enzymes of the glycolytic pathway are located in the?
- A. mitochondria
- B. gastric juice
- C. plasma
- D. cytoplasm
which of the following describes the sequence of blood flow from the heart to a tissue?
- A. Heart→ artery→ arteriole →tissue?
- B. heart→ vein →venule →tissue
- C. heart →venule→ vein →tissue
- D. heart →arteriole →artery →tissue
The part of alimentary system of a bird where food is ground into small particles is the?
- A. cloaca
- B. stomach
- C. crop
- D. gizzard
Which of the following is an example of carnivorous plant?
- A. hydra
- B. bladderwort
- C. yeast
- D. spirogyra
Bird toes suitable for digging have claws that are?
- A. blunt
- B. curved
- C. hooked
- D. sharp