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HomeUncategorizedSSLC 2021 FOCUS AREA BASED MODEL QUESTIONS AND ANSWERS | BIOLOGY

SSLC 2021 FOCUS AREA BASED MODEL QUESTIONS AND ANSWERS | BIOLOGY

SSLC BIOLOGY 

  1. Identify the odd one and write the common feature of others.

Touch, Sound, Smell, Thirst

  1. Identify  the word pair relationship and fill the blanks.

Myelin sheath : Covers and protects axon

…………………… : Covers and protects brain

  1. The ability of shark to sense smell is sharp. Why?
  2. The stimuli that can be received by our skin? 
  3. Normal calcium level in the blood:
  4. a) 80-120 mg/100 ml b) 13-15 mg/100 ml
  5. c) 5-12 mg/100 ml d) 9-11 mg/100 ml
  6. Correct the mistakes if any in the underlined word of the given given statement.

  Lack of thyroxine in adults leads to Cretinism

  1. The vaccine, ———-, is used against tuberculosis.
  2. The brain has a fluid which is formed from blood and reabsorbed into the blood.
  3. a) Identify the fluid.
  4. b) What are the functions of that fluid?
  5. Select the statements related to Haemophilia from the statements given below. 
  6. a) Excess blood is lost even through minor wounds.  
  7. b) Deformities in the sequencing of amino acids which are the building blocks of haemoglobin. 
  8. c) Red blood cells bend like sickle.  
  9. d) The genes that control protein synthesis which help in blood clotting become defective.
  10. e) RBCs get collected in the blood vessels and block the flow of blood in them. 
  11. Evaluate the statements given below and write the significance of each. 
  12. a) Vaccination is the best way to prevent Diptheria.
  13. b) Consuming partially eaten fruits by bats pose serious health hazards.

 

ANSWERS

  1. Thirst – Others are external stimuli.
  2. Meninges
  3. Shark has highly sensitive olfactory receptors.     
  4. Heat, Touch, Pain, Cold and Pressure

5 9-11 mg/100 ml

  1. Lack of thyroxine in adults leads to myxoedema
  2. BCG vaccine

8a) Cerebrospinal fluid

  1. b) Provides nutrients and oxygen to brain tissues, protects the brain from injuries.

9a)Excess blood is lost even through minor wounds.  

  1. d) The genes that control protein synthesis which help in blood clotting become defective.

10 a)Antitoxins which act against the toxins are used to protect the uninfected cells. But, if the disease becomes severe the patient cannot be recovered through medication. So vaccination is the best preventive method.

  1. b) Consuming partially eaten fruits by bats with viruses like NIPAH pose serious health hazards because of the possibility of disease occurrence. So it is necessary to avoid its consumption.
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