One of the following statement is not true of viruses
- A. They are micro-organisms
- B. They are smaller than bacteria
- C. They can be seen with an ordinary light microscope
- D. They cause tobacco disease
- E. They cause polio and smallpox
Bacteria inhabiting legume root nodules and which add atmospheric nitrogen to the soil are referred to as
- A. Denitrifying bacteria
- B. Nitrifying bacteria
- C. Nitrogen fixing bacteria
- D. Nitrogen freeing bacteria
- E. Nitrogen putrefying bacteria
Which one of the following is not an excretory product?
- A. Urine
- B. Sweat
- C. Faeces
- D. Salts
- E. Carbon-dioxide
In which of the following tissue do the cells have the ability to divide?
- A. Meristem
- B. Sclerenchyma
- C. Phloem
- D. Collenchyma
- E. Pith
A gland in the human body secretes two hormones, one of which causes a disease called diabetes when there is a deficiency. Which of these organ produce the hormone?
- A. spleen
- B. Parathyroid
- C. Adrenal body
- D. Thyroid
- E. Pancreas
The farmer cannot check soil erosion effectively by
- A. Constructing is ridges of planting across the slope
- B. Cultivating cover crops
- C. Practising strip farming
- D. Clearing the land of vegetation
- E. Constructing terraces
Which of these is not a type of soil?
- A. Sand
- B. Granite
- C. Loam
- D. Clay
- E. Sandy loam
The dry indehiscent, winged fruit formed from one one carpel is known as
- A. Schizocarp
- B. Caryopsis
- C. Samara
- D. Nut
- E. Follicle
The plumule is best described as?
- A. Part of the cotyledon
- B. Part of the endosperm
- C. A miniature shoot
- D. Structure near the micropyle
- E. Structure opposite the hilum
Alkaline pyrogallol was used in an experiment. That experiment must have been connected with
- A. Excretion
- B. Germination
- C. Transpiration
- D. Digestion
- E. Photosynthesis
A sugar solution was boiled with fehling’s solution A and B and the colour remained blue. The sugar tested was
- A. Glucose
- B. Maltose
- C. Fructose
- D. Sucrose
- E. Lactose
Which of the following statements is not true of paramecium?
- A. It is slipper-shaped
- B. The anterior end is blunt
- C. The gullet is lined with cilia
- D. It has an anal pore
- E. Its vacuole is stationary
The part of the mammalian brain responsible for maintaining balance is
- A. Medulla oblongata
- B. Cerebellum
- C. Optic lobe
- D. Cerebrum
- E. Olfactory lobe
In which of these association is much harm done to one of the partners?
- A. Symbiosis
- B. Epiphytism
- C. Commensalism
- D. Parasitism
- E. Mutualism
which of these diseases cannot be controlled by killing the vector?
- A. River blindness
- B. Malaria
- C. Polio
- D. Cholera
- E. Bilharzia (shistosoma)
When the ciliary muscles of the eye contract, the eye lens
- A. Bulge
- B. Contracts
- C. Rotates
- D. Flattens
- E. Is rounded
Which of the following is not an excretory organ in animals?
- A. Lungs
- B. Kidney
- C. Leaf
- D. Large intestine
- E. Skin
Which of these statement below is not a characteristic of wind pollinated flower?
- A. Stigmas are usually large and feathery
- B. Nectar is usually absent
- C. The pollen grains have rough spiny surfaces
- D. The flowers are not scented
- E. The pollen is light and smooth
The region of cell division in a root is
- A. Root cap
- B. Endodermis
- C. Xylem
- D. Piliferous layer
- E. Meristem
Which of these is not an enzyme?
- A. Pepsin
- B. Gastrin
- C. Amylase
- D. Chymotrypsin
- E. Trypsin
Which one of the following option is not true for mucor of Rhizophus? it
- A. Grows on moist dead organic matter
- B. Is a plant
- C. Has cellulose cell-wall
- D. Reproduce asexually by producing a spore
- E. Has no chlorophyll