FORM TWO BIOLOGY NECTA 2017

THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATION COUNCIL

BIOLOGY FTNA 2017

(i) Which structure differentiates euglena from other members of the Kingdom Protista?

  1. Possession of flagellum
  2. Possession of chloroplast
  3. Possession of antennae
  4. Possession of cell wall
Choose Answer :


(ii)The feeding relationship represented by the sequences of organisms "Green  is called:

  1. Food web
  2. Interaction
  3.   Food chain
  4. Pyramid
Choose Answer :


(iii) Which of the following blood groups is a universal recipient?

  1. B
  2. AB
  3. A
  4. O
Choose Answer :


(iv)  When a solution is mixed with Benedicts solution, the food substances that change in colour from blue to green to yellow and finally orange colouration after boiling is called:

  1. starch
  2. protein
  3. reducing sugar
  4. lipids
Choose Answer :


(v)  Insufficient food rich in protein to children especially infants result into nutritional deficiency disease called.

  1. Marasmus
  2. Obesity
  3. Kwashiorkor 
  4.  Ricketts
Choose Answer :


(v)  Insufficient food rich in protein to children especially infants result into nutritional deficiency disease called.

  1. Marasmus
  2. Obesity
  3. Kwashiorkor 
  4.  Ricketts
Choose Answer :


(vii)  The blood vessel which carries blood from the lungs to the heart is called:

  1. pulmonary artery
  2. vena cava
  3. pulmonary vein 
  4.  renal vein
Choose Answer :


(viii)Which one of the following are examples of animal tissues?

  1. Muscle, blood and bone
  2. Brain, bone and liver
  3. Skin, heart and brain
  4. Muscle, liver and skin
Choose Answer :


(ix)  What does the concept of good health imply?

  1. A state of physical, sexual and mental fitness
  2. Being physically, mentally and socially fi
  3. A state of family well being
  4. Reproductive health and family care
Choose Answer :


(x)  First Aid given to a victim of electric shock is meant to:

  1. keep the victim moving
  2. send the patient to the hospital
  3. provide the victim with fluids
  4. lie down with his/her feet higher than head
Choose Answer :


2.For each of the items (i) - (x), write True if a statement is correct or False if a statement is not correct in the space provided.

(i) Botany is the study of animals  

(ii)Gaseous exchange in mammals takes place in the nose and mouth

(iii)One enzyme can act on several food substances ...............

(iv)During inhalation the ribs move upwards and outwards............... 

(v) Anemia is a condition in which a patient has few erythrocytes . 

(vi) Landfill is a way of disposing domestic wastes ...............

(vii)Amylase is an enzyme which acts on protein ...............

(viii)Consumers in the ecosystem produce their own food...............

(ix)Syphilis is a communicable disease ...............

(x)All bacteria are harmful to man ...............

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LIST A

LIST B

(i) A disease transmitted through sexual intercourse and treated by antibiotics.

(ii) A viral disease transmitted through sexual intercourse.

(iii) A disease characterized by fever and coughing up blood sputum.

(iv) A disease spread by an agent know as anopheles.

(v)  A disease caused by lack of proper hygiene and victim had a stool of rice-water colouration.

 

 

A. Cholera

B. Typhoid

C. AIDS

D. Malaria

F. E. Syphilis

G. Common cold

H. Schistosoma

I. Tuberculosis

 

 

 

 

 

 

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4.Complete each of the following statements by writing the correct answer in the answer sheet provided.

(i) A taxonomic rank of organisms which interbreed freely and give rise to viable offspring are known as ......................... 

(ii) The type of classification which is based on few observed features is called ..... 

(iii)The highest rank of classification is known as .......................... 

(iv) The process of sorting living things into groups is called . 

(v) The process of giving organisms scientific names is known as .................

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SECTION B

5.(a) Outline seven steps of the scientific process used by scientists in scientific investigation.

(b)Why is a hand lens useful in studying Biology?

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6.Define the following terms:

(i)Parasite

(ii)Host

(iii)Community

(b)Give two examples for each of  the following group ofparasitic organisms:

(i)Endoparasite

(ii)Ectoparasite

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7.State the meaning of the terms "tissue" as used in Biology.

(b)Arrange the following terms in a sequential order from simple to complex: Tissue, Organism, Organ, Cell and System

(c) Outline two differences between plant cell and animal cell

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8.Figure 1 represents a part of the digestive system of a mammal. Study it carefully then answer the questions that follow:

Fig. 1

(a) Name the parts lebelled with the letters A, B, C, D, E and F

(b)Name two enzymes secreted by the part labelled with letter F

(c)State the role of any one of the enzyme secreted by the part labelled F.

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9.(a) Mention three structures used for gaseous exchange in land plants

(b)Briefly explain how the structure of a leaf is adapted to allow rapid gaseous exchange.

(c)Name the product of anaerobic respiration in human being muscles.

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SECTION C

10.     Describe how you can provide First Aid to a person who has been "bitten by a snake" and the one who has "fainted during ground parade".

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11.     With the aid of a diagram, describe the structure of each of the types of blood cells and give one function for each.

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