S 3 ONLINE BIOLOGY TEST TWO

Which one of the following structures secretes the follicle stimulating hormone?
1. Corpus luteum
2. Endometrium
3. Graafian follicle
4. Pituitary gland
Which of the following is a class?
1. Crustacea
2. Platyhelminthes
3. Annelida
4. Monera
Some live maggots were put in a glass tubing.Both ends were blocked with paper.The middle part was filled with moist cottonwool.After 20 minutes all the maggots had moved to the cotton wool of because they_________________.
1. show negatively nastic response to moisture.
2. show positively nastic response to moisture.
3. show negatively tactic response to moisture.
4. show postively tactic response to moisture..
Musca domestica gets rid of nitrogenous wastes through structures called
1. Nephridia
2. tracheoles
3. Nephrons
4. Malpighian tubules.
The most prominent characteristic feature of a lumbar vertebra is the presence of_________.
1. A large centrum
2. Odontoid process
3. a long neural spine
4. vertebrarterial canal
Which of the following suits an antelope?
1. Chordata
2. Nematoda
3. Annelida
4. Coelenterata
. The table below shows the results of an experiment to determine the amount of water lost by a potted plant due to transpiration under different environmental conditions.
Time(Min) 0 5 10 15 20 25 30
Weight of potted plant(g) 500 500 405 300 200 190 185

Under which of the following conditions was the experiment performed between 5 and 20 minutes.?
1. In a dark room covered with a wet polythene bag.
2. In a shady,cooled and enclosed place.
3. In a cold,humid and shaded place.
4. Outside a classroom during a bright afternoon.
Blood grouping is done by adding specimen blood to known samples of serum.A blood sample was added to anti-B serum.There was no clumping.When the sample was added to anti-A serum clumping occurred.What was the blood sample?Blood group________.
1. B
2. A
3. AB
4. O
Which of the following is the main growth stage of a housefly?
1. Larva.
2. Pupa.
3. Adult.
4. Egg
Which of the following secretions contains an enzyme that coagulates milk?
1. Gastric juice
2. Succus entericus
3. Pancreatic juice
4. Saliva
The table below shows the surface area and volume of 4 animals. Which one of them would most need a breathing system?
1. Animal Surface area (Cm2) Volume (Cm3)
  A. 1154 1127
2. B. 72 24
3. C. 30 50
4. D 10 4
Which of the following parts of a ruminant gut is the largest and stores food temporarily?
1. Rumen
2. Abomasum
3. Omasum
4. Reticulum
Some xerophytes have solved the problem of water loss physiologically by
1. reducing the number of stomata.
2. possession of long roots which absorb water from deep down the soil.
3. possession of hairy epidermis.
4. opening the stomata at night and closing them by the day.
A transverse section of unnamed plant when examined under a microscope was found to have an epidermis with a very thick cuticle.The unnamed plant is most likely a________________.
1. Hydrophyte
2. Xerophyte
3. Mesophyte
4. Halophyte.
An athlete has just finished a race.’oxygen debt’ refers to
1. The amount of oxygen originally present in the muscles of the athlete before the race.
2. The total amount of oxygen the athlete requires to restore the breathing rate to normal.
3. The amount of oxygen taken in after the race and used to complete the combustion of some of the lactic acid.
4. The amount of oxygen required after the race to complete the combustion of excess lactic acid .
. Which change occurs in the cell and what causes the change?
1. Change Cause
  
  Cell becomes more flaccid Solution diffuses out of the cell
2. Cell becomes more turgid Water diffuses into the cell
3. Cell becomes more turgid Solution diffuses into the cell
4. Cell becomes more turgid Water diffuses out of the cell
In which region of the mammalian kidney does glomeruli occur?
1. Cortex
2. Medulla
3. Pelvis
4. Pyramid
Which of the following fins in a fish is used for breaking when the fish is locomoting?
1. Anal
2. Pelvic
3. Dorsal
4. Ventral
In the classification of organisms which of the following is the correct hierarchy of the taxonomic groups?
1. family genus kingdom class order phylum
2. family genus order phylum kingdom class
3. genus family order class phylum kingdom
4. kingdom genus phylum order family class
Which of the following organisms would have their growth rate increased by a rise in levels of atmospheric carbondioxide?
1. bananas
2. antelopes.
3. cheetahs.
4. musrooms.
Which of the following is NOT a role of humus in the soil?
1. Improving soil aeration.
2. Prevention of soil erosion.
3. Water retention.
4. Increasing soil fertility.
Which one of the following plants develops without fertilization?
1. Pawpaw.
2. Redpepper.
3. Lemon
4. pineapple
Which one of the following statements would explain why a bean seedling loses weight during the first weeks after germination?
1. The seedling loses more water than it absorbs.
2. Soluble food materials are converted to starch.
3. The stored food is used up during respiration.
4. Soluble food materials are lost into the soil.
Which of the following mineral nutrients are constituents of the green pigment in plants?
1. Potassium and sulphur.
2. Nitrogen and magnesium.
3. Calcium and phosphorus.
4. Zinc and copper.
Relaxation of the internal intercostal muscles results into
1. increased pressure in the chest cavity.
2. ribs moving inwards and downwards.
3. increased volume of the chest cavity.
4. the diaphragm becoming domeshaped
Which one of the following is likely to be due to deficiency of calcium in plants?
1. Stunted growth and poor root development.
2. Poor growth and yellow leaves.
3. Tall slender stems with few leaves.
4. Short plants with well developed root system.
The table below shows the changes in the dry weight of seedlings during the first six weeks of germination.

Time(weeks) 0 1 2 3 4 5 6
Dry weight(g) 150 100 75 50 80 160 300
Which one of the following would explain the change taking place during the first weeks?
1. The soil is dry and seeds are losing water too quickly.
2. The cotyledons were eaten away by the soil organisms.
3. The seedlings are using some of their food substances for respiration.
4. The rate of respiration is lower than that of photosynthesis.
The type of soil with large air spaces and low capillarity is __________
1. Sand.
2. Clay.
3. Silt.
4. Loam.
The following are features found in birds
i) Light bones.
ii) Webbed feet.
iii) Scales on the legs.
iv) Steamlined body.
Which of the features are adaptations for flight?
1. i) and ii)
2. ii) and iii)
3. iii) and iv)
4. i) and iv)
Which of the following bacteria is responsible for nitrogen fixation?
1. Azotobacter.
2. Nitrobacter.
3. Nitrosomonas.
4. Staphylococcus
A biologist found an animal which he thought was a new species. It had a cylindrical body about 13 cm long and 10 mm in diameter. It had a hard outside skin with many body segments and more than 20 legs. Into which one of the groups below would you have classified this animal,?
1. Insecta
2. Myriapoda
3. Crustacea
4. Arachnida
In the classification of organisms which of the following arrangements has the correct order of the increasing number of species?
1. Dictyoptera,insecta,arthropoda,animalia.
2. Animalia,arthropoda,insecta,dictyoptera.
3. Arthropoda,dictyoptera,insecta,animalia.
4. Insecta,animalia,dictyoptera,arthropoda.
In which region of the mammalian kidney does pressure filtration occur?
1. Glomerulus
2. Proximal convoluted tubule
3. Loop of Henle
4. Distal convoluted tubule.
In which one of the following places would the plant have the highest transpiration rate?
1. In a dark and hot room.
2. In a cool and well lighted room.
3. In a dark and cool room
4. In a hot and well lighted room.
Where in the maize grain are most carbohydrates stored ?
1. Cotyledon
2. Radicle
3. Endosperm
4. Plumule
. The muscular energy used by a squirrel while climbing up a tree originates from the sun. Which of the following is the correct sequence in which the energy has been transformed ?
(i) Digestion of starch in the squirrel (ii) Deposition of starch in a fruit (iii) Tissue respiration in the squirrel (iv) Synthesis of sugar in a leaf
1. (iv), (i), (iii), (ii)
2. (ii), (iv), (i), (iii)
3. (iv), (ii), (i), (iii)
4. (i), (iv), (ii), (iii)
The following parts are involved in the transport of oxygen from the atmosphere to the capillaries in the lungs.
1.Nostrils
2.Air sacs
3.Bronchi
4.Trachea
5.Capillaries
Which of the following is the correct route of oxygen from the atmosphere to the capillaries ?
1. 1,2,3,4,5
2. 1,4,3,2,5
3. 1, 3, 2, 4, 5
4. 1, 4, 2, 3, 5
When the triceps contracts
1. the arm is straightened
2. the hand is pulled closer to the shoulder
3. the arm is raised
4. the hand is straightened
One of the properties of clay which distinguishes it from sand is that
1. it has less air in between the particles
2. it holds less water in between and around the particles
3. water moves through it more easily
4. its capillarity is lower

S 3 ONLINE BIOLOGY TEST TWO

Quiz