CSEC Biology Paper 1 May/June 2004 - Free CXC Past Paper with Answers

Which of the following statements is NOT true about decomposers?

Which of the following factors is NOT indi- cated by the direction of the arrows in a food chain?

A dog, killed on the roadway by a vehicle, is left to decay. Which of the following organ- isms would be directly responsible for return- ing the carbon and nitrogen compounds of the dog's body to the environment?

'Spaces' between the cells in the human body are filled with

solute molecules from 1 to 2

Which of the following variables is being investigated?

Which of the following types of chemical reaction is likely to have taken place?

The variation in cellular structure found in any complex organism is due to a process called

One of the problems with nutrition for a vegetarian is that

The rate at which respiration is occurring in a mammal can be indicated by the rate of

Characteristics I to IV describe structures that are MOST likely to be associated with the

In a patient with a certain defective heart condition, it was found that blood flowed from Point I to Point II. This was MOST likely due to the malfunction of the

Large organisms cannot depend solely on diffusion for the uptake and transport of gases. This is because as organisms get larger the

Which of the following nutrients supplies most energy per gram?

Which of the following substances can be found in high proportion in the nucleus?

From the table above, determine which of the following statements is NOT true?

The normal function of the mammalian kidney is

The reactants in aerobic respiration are

The alveoli of the lungs of a mammal

Blood entering the glomerulus of the kidney differs from blood leaving it, since the blood entering has

Bones act as storage depots for minerals in the body. The MOST important of the minerals they store are

Which of the following groups of functions is performed by a rib? I. Blood formation II. Protection III. Locomotion IV. Support

The MAIN function of cartilage at the end of long bones is to

Which of the following statements would NOT represent a form of excretion in plants?

The primary function of the neural spine of the lumbar vertebra is for

The eye is sometimes referred to as an effector organ because

Insulin (a protein) is never taken orally because it

Which of the following conditions are necessary for germination to take place? I. Air II. Food supply III. Light IV. Moisture

Which of the following conditions MOST directly controls increase in size in the flowering plant?

Which of the following features is NOT a function of human skin?

Internal reflection of light within the eye is prevented by the

If an object is thrown towards you, your eyes blink. The receptors and effectors for this reflex action are the

Which of the following conditions is likely to promote a lowering of body temperature?

A seedling illuminated from one side, bends towards the light source because the concentration of auxins becomes

When an athlete runs a long-distance race, which of the following changes would you expect to take place in his/her body?

Which of the following sequence of structures shows the route taken by a sperm cell when it leaves the testis?

Which of the following features are examples of homeostasis in mammals? I. Control of the blood sugar level by insulin II. Limiting temperature changes to slight fluctuations III. Differences in the level of female hormones during the menstrual cycle IV. Changes in the rate of breathing to suit the body's activities

Pollination is the process by which pollen is transferred from the

Some plants, such as Bryophyllum (Leaf of Life, Wonder-of-the-world), can be propagated from buds at the leaf margin. The buds develop into complete plantlets while still attached to the leaf margin. These plants also flower and produce seeds. The development of the plantlets and the seed

Which of the following processes will produce clones? I. The growth of a fungus on a piece of bread II. The development of plantlets at the leaf margins of Bryophyllum III. Propagation of sugar cane from cuttings IV. Germination of seeds from the same pod

In which of the following organs does meiosis occur?

In which of the following parts of the plant would you expect the process of mitosis to occur? In the region

Which of the following combinations of sex chromosomes is found in the nuclei of non-reproductive cells of humans?

In a particular breed of dog, long hair (L) is dominant to short hair (Z). A certain cross produced some long-haired and some short-haired pups. Which of the following crosses would MOST likely have been the genotypes of the parents?

Which of the following processes may be used by man to change the characteristics of a particular organism in a short time? I. Genetic engineering II. Artificial selection III. Natural selection

The same species of hibiscus plants were grown on two garden plots near to each other. One plot, which was well watered and manured, produced large plants. The other plot contained sandy soil and produced small plants with leaves that were reduced in size. The hibiscus plants

Pathogens are BEST described as organisms that

Which of the following treatments does NOT provide a form of immunisation?

Which of the following statements is TRUE of antigens?

Which of the following consequences are a direct result of disease in man? I. Loss of man hours and productivity II. Loss of human life III. Loss of livestock and crops

Water logging of soil results in the death of soil organisms because

Which of the following factors is NOT associated with rapid increase in human populations?

Which of the following features is an advantage of using inorganic fertilizers rather than organic manure?

An open field was investigated using metre quadrats. In 5 random throws species A occurred as shown in the table below.

This data can be used to determine

Has a good food supply and is NOT subject to environmental stress.

Has reached its equilibrium and there is a delicate balance between the rate of births and deaths.

These characteristics MOST likely belong to a plant which grows in a region that is

All the individuals of a particular species living in a defined area or location are referred to as