A fruit formed from a single flower having several free carpels is
- A. a multiple fruit
- B. a dry dehiscent fruit
- C. a dry indehiscent fruit
- D. a simple fruit
- E. an aggregate fruit
The tissue which connects a muscle to a bone is a
- A. cartiligae
- B. muscle fibre
- C. tendon
- D. ligament
- E. connecting fibre
Which of the following statements is NOT true of menstruation?
- A. It occurs monthly
- B. The discharge contains amniotic fluid
- C. Its signifies no conception
- D. It involves the lining of uterus
- E. It may cause pains
Nitrification means
- A. conversion of nitrates to nitrogen
- B. fixing nitrogen into plants
- C. conversion of nitrates to nitrites
- D. changing of ammonia to nitrities, then nitrates
- E. nitrogen cycle
A surprising fact about sickle cell disease is that it
- A. affects only black people
- B. kills the patient
- C. is hereditary
- D. affects blood cells
- E. weakens the patient
If Benedict’s solution gives a positive result in a food test, the food contains
- A. sugar
- B. protein
- C. oil
- D. fat
- E. cellulose
A person whose blood can be donated to all other people, must have the blood group
- A. O
- B. AB
- C. B
- D. A
- E. none of the above
Which of the following statement is NOT true of symbiosis?
- A. Symbionts must be living
- B. It is an association of 'give and take'
- C. The association may involve two plants
- D. Association between two similar species
- E. Symbionts derive mutual benefit
Normally any character shown by an organism is due to the effects of
- A. hormones and chromosomes
- B. chromosomes
- C. mutation
- D. hormones and genes
- E. genes and enviroment
Accommodation of the human eye is best described as the
- A. ability to see distant objects
- B. movement of upper and lower eyelids
- C. focusing of near and distant objects
- D. changing of lens shape due to varying light intensities
- E. constant adjustment of the iris
In a bakery, yeast is added to flour to make bread rise. This is possible because yeast produces
- A. alcohol
- B. oxygen
- C. carbon dioxide
- D. energy
- E. ethanol
All the following are digestive enzymes except
- A. bile
- B. lipase
- C. maltase
- D. pepsin
- E. ptyalin
The two types of human tapeworm can be distinguished by the presence or absence of
- A. scolex
- B. hook
- C. head
- D. sucker
- E. proglottis
What is name of the respiratory organ of the crab?
- A. Tubules
- B. Trachaea
- C. Spiracles
- D. Lungs
- E. Gills
The rate of transpiration of a leafy shoot would be highest under
- A. damp, cold, still air
- B. damp, warm, moving air
- C. dry, warm, moving air
- D. dry, cold, moving air
- E. dry, warm, still air
Milk protein is hydrolyzed by
- A. renin
- B. amylase
- C. lipase
- D. lactase
- E. pepsin
Which of the following instruments is used to demonstrate the response of roots and shoots to gravity?
- A. Clinostat
- B. Manometer
- C. Porometer
- D. Potometer
- E. Photometer
Spirogyra reproduces vegetatively by
- A. spore production
- B. fragmentation
- C. multiple fission
- D. budding
- E. binary fission
Which of the following is NOT a function of the liver?
- A. Regulation of blood sugar
- B. Storage of iron
- C. Formation of bile
- D. Breakdown of excess amino acids
- E. Excretion of urea from the blood
Choose the sequence which represents the correct order of organisms in a food chain.
- A. Grass, snake, toad, grasshopper, hawk
- B. Grass, grasshopper, toad, snake, hawk
- C. Grass, grasshopper, snake, toad, hawk
- D. Grass, snake, grasshopper, toad, hawk
- E. Grass, toad, snake, grasshopper, hawk
What is the function of the contractile vacuole in paramecium?
- A. Produces enzymes
- B. Gets rid of excreta
- C. Stores and digest food
- D. Gets rid of excess water
- E. Controls movement