The following processes release carbondioxide into the atmosphere EXCEPT
- A. combustion
- B. decomposition
- C. putrefaction
- D. respiration
- E. transpiration
Digested food is carried from small intestine to the liver by the
- A. hepatic artery
- B. hepatic portal vein
- C. hepatic vein
- D. inferior vena cava
- E. superior vena cava
Plants use Nitrogen in the form of
- A. ammonia
- B. ammonium
- C. nitrates
- D. nitrites
- E. urea
Which of the following enzymes act on carbohydrates?
- A. Amylase
- B. Lipase
- C. Pepsin
- D. Renin
- E. Trypsin
These groups of bacteria are harmless EXCEPT
- A. denitrifying
- B. nitrifying
- C. nitrogen-fixing
- D. parasitic
- E. saprophytic
Which of the following is a characteristic of mollusc?
- A. Bodies are protected by hard exoskeleton
- B. Bodies are segmented
- C. Body walls have three layers
- D. Presence of paired jointed appendages
- E. The head bears a pair of antennae
These animals exhibit camouflage EXCEPT
- A. chameleon
- B. crab
- C. crocodile
- D. lizard
- E. snake
Which of these vertebrae is of the same number in man and rabbit?
- A. Caudal
- B. Cervical
- C. Lumber
- D. Sacral
- E. Thoracic
Cellular respiration occurs in the
- A. chloroplast
- B. endoplasmic reticulum
- C. food vacuole
- D. mitochondrion
- E. nucleus
Which of the following enables mammals to maintain balance?
- A. Cochlea
- B. Eustucian tube
- C. Ossicle
- D. Semi-circular canal
- E. Tympanic membrane
Which of the following body characteristics distinguishes Ascaris from Earthworms?
- A. Bilaterally symmetrical
- B. Cylindrical
- C. Segmented
- D. Soft
- E. Unsegmented
Mycelium is a feature of
- A. algae
- B. bacteria
- C. ferns
- D. fungi
- E. viruses.
The part of the male reproductive organ where sperm cells are produced is called?
- A. epididymis
- B. penis
- C. seminal vesicle
- D. seminiferous tubules
- E. vas deferens
Which of the following processes converts nitrates in the soil to atmospheric nitrogen?
- A. Denitrification
- B. Lightning
- C. Nitrification
- D. Putrefaction
- E. Rainfall
Which of these is a simple dehiscent fruit?
- A. Achene
- B. Cypsela
- C. Legume
- D. Nut
- E. Samara
The male reproductive part of a flower is made up of
- A. anther and filament
- B. ovary and ovule
- C. ovule and style
- D. stigma and filament
- E. style and stigma
The type of placentation found in tomato fruit is called
- A. axile
- B. bisal
- C. free central
- D. marginal
- E. parietal
Exoskeleton is a characteristic feature of
- A. amoeba
- B. earthworm
- C. hydra
- D. millipede
- E. tapeworm
Which of the following is an abiotic factor in an ecosystem?
- A. Food
- B. Host
- C. Parasite
- D. Predator
- E. Pressure
The structure in cell concerned with the synthesis of proteins is the
- A. endoplasm reticulum
- B. ribosome
- C. nucleus
- D. plasma membrane
- E. golgi apparatus
Root hairs are extensions of the
- A. cortex
- B. endodermis
- C. epidermis
- D. piliferous layer
- E. vascular bundle