The organ located in the mammalian abdominal cavity just below the diaphragm
and lying on top of the stomach is the
- A. bladder
- B. intestine
- C. liver
- D. pancreas
- E. chorion
The structure of the embryo which develops and makes contact with the uterine
wall is known as the
- A. umbilical cord
- B. placenta
- C. allantois
- D. amnion
- E. chorion
What is the difference between viviparous and oviparous animals?
- A. Possession of yolked eggs
- B. Laying of unfertilized eggs
- C. Possession of yolkless eggs
- D. Protection of eggs from predator
- E. Laying and brooding of eggs
The gamete is produced in the structure labelled
- A. I
- B. II
- C. IV
- D. VI
- E. V
The structures labelled III, VI, IV and II respectively represent the
- A. uterus, cervix, oviduct and ureter
- B. cervix, oviduct, uterus and ureter
- C. oviduct, uterus, ureter and cervix
- D. vagina, cervix, oviduct and uterus
- E. uterus, cervix, ovary and oviduct
Which of the following parts of the’ tongue does not correspond to the taste indicated against it?
- A. Tip-sweet
- B. Centre salt
- C. Back-sour
- D. Side-sour
- E. Back-bitter
Which of the following stimuli are not perceived through the skin of mammals?
- A. Light
- B. Pressure
- C. Pain
- D. Heat
- E. Cold
Which of the following is not true about auxins? They
- A. are manufactured by plants
- B. are used in the site of production
- C. are normally present in minute quantities in the cells of plants
- D. regulate growth rate of plants
- E. regulate direction of growth in plants
The brain and spinal cord make up the
- A. peripheral nervous system
- B. automatic nervous system
- C. central nervous-system
- D. somatic nervous system
- E. sympathetic nervous system
Which of the following parts of the mammalian brain is involved in taking the decision to run rather than
walk?
- A. Cerebellum
- B. Medulla oblongata
- C. Cranial nerves
- D. Mid brain
- E. Cerebrum
The condition known as cretinism is caused by the deficiency of
- A. adrenalin
- B. vitamin A
- C. insulin
- D. thyroxin
- E. vitamin C
The increase in width of blood vessels in the mammalian skin at high temperatures is known as
- A. vasodilation
- B. sweating
- C. vasoconstriction
- D. shivering
- E. evaporation
The cup-shaped part of the Bowman’s capsule contains
- A. nephridium
- B. glomerulus
- C. loop of Henle
- D. nephron
- E. convoluted tubule
Which of the following takes place during the process of detoxication in the liver?
- A. Poisonous substances in the body are converted into harmless substances
- B. Fats and oils are broken into finer particles through emulsification
- C. Excess glucose in the blood are converted into glycogen and stored
- D. Worn- out red blood cells are broken down
- E. Enough heat is generated to sustain the activities of the liver
The mechanism by which useful materials in the glomerular filtrate are taken back into the blood is known
as
- A. filtration
- B. reabsorption
- C. haemolysis
- D. osmosis
- E. dialysis
Which of the following are components of glomerular filtrate?
- A. All the components of Blood except mineral salts
- B. Water and salt only
- C. All the components of blood except plasma protein and cells
- D. Plasma proteins, red and white blood cells
- E. Blood cells, amino acid, salts and nitrogenous wastes.
Breathing movement in mammals is accompanied by regular movements of the diaphragm and the
- A. intercostal muscles
- B. vertebral column
- C. clavicle
- D. pleural cavity
- E. floating ribs
Gaseous exchange takes place in the adult toad through the
- A. buccal cavity, bladder and lungs
- B. buccal cavity, skin and lungs
- C. tympanic membrane, lungs and gills
- D. buccal cavity, skin and spiracle
- E. gills skin and buccal cavity
Water vapour is lost in plants during transpiration through
- A. stomata and lenticels
- B. xylem and stomata
- C. sclerenchyma and stomata
- D. parenchyma and lenticels
- E. guard cells and lenticels
Different tissues in plants contribute to the support of the parts as a result of the following characteristics
except
- A. malleability
- B. rigidity
- C. flexibility
- D. resilience
- E. hardness
The stems of young herbaceous plants are kept upright mainly by
- A. osmotic pressure
- B. turgor pressure
- C. transpiration pull
- D. suction pressure
- E. root pressure.