141.An example of Vascular tissues is --------------
- A. Trichome
- B. Xylem
- C. Stomata
- D. Epidermis
142.The living part of phloem tissue is
- A. sieve plate
- B. companion cell
- C. sieve element
- D. cytoplasm
143.Which of the following tissues are made up of dead cells
- A. meristems
- B. xylem vessels
- C. cambium
- D. mesophyll
144.A plant vacuole contains
- A. dissolved chemicals, sugars, salts, pigments and crystals
- B. waste products of metabolism, DNA, RNA and crystals
- C. pigments, crystals, DNA and waste products of metabolism
- D. RNA, DNA, sugars and salts
145.Excessive loss of water in plants is known as
- A. Osmosis
- B. Osmoregulation
- C. Transpiration
- D. Excretion
146.Starch granules in plants is equivalent to _____________ granules in animals
- A. Food
- B. Chromatin
- C. Lysosome
- D. Glycogen
147.Which of the following is a plant excretory product?
- A. Oil
- B. Cytokinin
- C. Resin
- D. amino acids
148. A plant which grows on another without causing harm to the host plant is called ––
- A. a parasite
- B. a saprophyte
- C. an epiphyte
- D. a predator
149.Plants which can survive in places where water supply is limited are
- A. bryophytes
- B. mesophytes
- C. xerophytes
- D. hydrophytes
150.The muscle cell fluid of an athlete was tested immediately after a 100m race and was found to contain a high concentration of lactic acid. Explain what could have caused this. The
- A. Athlete must have eaten food containing lactic acid
- B. Athlete must have injected lactic acid into his blood just before the race
- C. Athlete must have carried out anaerobic respiration during the race
- D. Athlete must have inhaled lactic acid from the environment during the race
151.One of this is not a continuous variation
- A. Height
- B. Weight
- C. Tongue rolling
- D. Skin colour
152.One of the following is usually worm-like, cylindrical or flattened
- A. Molluscs
- B. Insects
- C. Nematodes
- D. Annelids
153.The roots hairs are for
- A. Strength and support
- B. Conducting liquid
- C. Absorption of water and salt
- D. Penetration into the soil
154.The random way genes recombine during meiosis and fertilization leads to
- A. Genetic variation
- B. Pheno type
- C. Genome
- D. Genotype
155.An ecosystem is composed of all of the following except
- A. Plants
- B. Animals
- C. Temperature
- D. Meadows
156.In a food web, tertiary consumers belong to which trophic level
- A. First
- B. Second
- C. Third
- D. Fourth
157.The primary structure responsible for pumping blood for circulation through the mammalian circulatory system is the
- A. Veins
- B. Right auricle
- C. Arteries
- D. Left ventricle
158.The cocoon into which an earthworm lays its egg is produced in the
- A. Prostomium
- B. Peristomium
- C. Chaeta
- D. Clitellum
159.In bony fishes, the swim bladder is used for
- A. Adjusting the weight of the fish when swimming at different levels
- B. Extracting oxygen from water which enters the mouth of the fish
- C. Equalizing fluid pressures between the fish and the surrounding water
- D. Absorbing more water when the fish is about to descend to a lower level
160.The theory that new organs or characteristics develop in organisms when there is need for them was postulated by
- A. Charles Darwin
- B. Wallace
- C. Jean Lamarck
- D. GregorMendel