The waste product of insects is?
- A. uric acid
- B. urine
- C. Mucilage
- D. sweat
During mitosis, the stage at which chromosomes lines up around the equator is?
- A. telophase
- B. metasphase
- C. anaphase
- D. prophase
The movement of Euglena towards the source of light is a?
- A. tropic movement
- B. tactic movement
- C. nastic movement
- D. kinetic movement
An adaptation for defense in animals is?
- A. croaking of a male toad
- B. basking in lizard
- C. spines in porcupine fish
- D. huddling together of penguins
The body of a snail is divided into head?
- A. thorax and abdomen
- B. visceral mass and abdomen
- C. thorax and foot
- D. visceral mass and foot
sources of air pollutants are?
- A. industrial chimneys, burning fossil oils and river dams
- B. sulphurdioxide, acid rain and pesticides
- C. sulphur dioxide, vehicle exhausts, and aerosols
- D. sewage,smoke and old vehicles
Blood circulation in a mammal is said to be double because?
- A. it passes twice through the heart in a complete circuit
- B. it moves in both arteries and veins
- C. it circulates in both the heart and other organs
- D. the heart contains auricles and ventricles
If both parents are heterozygous for a trait. the probability that an offspring will be recessive for that trait is?
- A. 1/2
- B. 1/4
- C. 1
- D. 3/4
The mutation theory of organic evolution was propounded by?
- A. Gregor Mendel
- B. Hugo de Vries
- C. Jean Lamarck
- D. Charles Darwin
The movement of part of a plant in response to external stimulus of no particular direction is?
- A. taxism
- B. tropism
- C. haptotropic movement
- D. nastic movement
The most abundant group of organisms in the animal kingdom?
- A. Mammalia
- B. Aves
- C. Insecta
- D. Annelida
The plants that grow in deserts or very dry areas are referred to as?
- A. hydrophytes
- B. epiphytes
- C. xerophytes
- D. mesophytes
Which of the following is true in blood transfusion?
- A. A person of blood group AB can donate blood only to another person of blood group AB
- B. Persons of blood groups A and B can donate or receive blood from each other
- C. A person of blood group AB can receive blood only from persons of blood group A or B
- D. A person of blood group O can donate only to a person of blood group O
The sequence of the one-way gaseous exchange mechanism in a fish is?
- A. mouth --> operculum -> gills
- B. mouth -> gills > operculum
- C. operculum > gills -> mouth
- D. gills -> operculum --> mouth
I. Stomata –> Spirogyra
II. Alveoli –> Earthworm
III. Malpighian tubule -> Mammal
IV. Contractile vacuole -> Protozoa
Which of the above structures is correctly matched with the organisms in which it is found?
- A. II
- B. I
- C. IV
- D. III
Mass of a crucible = 10g,
Mass of a 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%
The order of passage of food in the digestive system is
- A. ileum --> caecum ->large intestine -> rectum
- B. ileum --> colon --> caecum -> rectum
- C. large intestine --> ileum -> caecum -> rectum
- D. colon -> caecum -> ileum -> rectum
The correct sequence of the movement of urea during urine formation is?
- A. glomerulus ---> Bowman's capsule -> convoluted tubule ---> Henle's loop -> collecting- tubule
- B. glomerulus -> Bowman's capsule -> convoluted tubule -> Henle's loop -> convoluted tubule -> collecting tubule
- C. convoluted tubule -> glomerulus --> Nettle's loop -> Bowman's capsule->collecting tubule
- D. convoluted tubule -> Bowman's capsule -> Henle's loop -7> glomerulus -> collecting tubule
Which of the following produces both hormones and enzymes?
- A. Ileum
- B. Pancreas
- C. Gall bladder
- D. Kidney
I. Rattus rattus. Il. Agama agama III. Bufo regularis IV. Tilapia zillii
The order of evolutionary advancement of the above vertebrates is?
- A. I, II, III, IV
- B. I, IV, III, II
- C. II, III, IV, I
- D. IV, III, II, I
The two key cations involved in the action potential of nervous transmissions are?
- A. Na+ and Fe2+
- B. Mg2+ and K+
- C. Na+ and K+
- D. Fe2+ and Mg2+