Chapte12 First Half Biology 1st years

Chapte12 First Half Biology 1st years

This is Chapte12 First Half Biology 1st year T-Series Zakarya Science Academy Chowk Azam Layyah

Marks: 50      

Q: 1 Select the best One (10 Marks)

A plant requires nitrogen and sulfur for its

  1.  Cell wall   
  2. Enzymes 
  3. Starch deposits
  4. DNA replication

Most vitamins function as

  1. Catalyst
  2. High energy compounds
  3. Gastro vascular cavity
  4. Transport molecules

A plant requires potassium for

  1. Synthesizing proteins
  2. synthesizing chlorophyll    
  3. Opening and closing of stomata
  4. None

Carnivorous plants live in soils that are deficit in

  1. Water 
  2. Oxygen                   
  3. Nitrogen                 
  4. iron

Digestion in Hydra and Planarian takes place within their

  1. Coelom
  2. Alimentary canal    
  3. Gastro vascular cavity
  4. Mouth

A mammalian herbivore has

  1. Fewer teeth than carnivore
  2. Flatter teeth than a carnivore
  3. More teeth than a carnivore
  4. More pointed teeth than a carnivore

Chlorophyll contains

  1. Sulfur
  2. Nitrogen                 
  3. Magnesium
  4. Calcium

Lack of chlorophyll results in

  1. Diagnosis
  2. Chlorosis                 
  3. Phosphorus
  4. Symbiosis

The release of nitrates by saprophytic bacteria helps in

  1. Carbon cycle
  2. Oxygen cycle
  3. Nitrogen cycle         
  4. Water cycle

Feeding by living in or on other organisms is a

  1. Parasite
  2. Fungicide               
  3. Insecticide   
  4. Saprophyte

Chapte12 First Half Biology 1st years

Q.2 Short questions 

  1. What is Chlorosis? How is it caused?
  2. What is a saprophytic mode of nutrition? Give examples 
  3. Define carnivores. What adaptations to their feeding habit are observed in their teeth?
  4. Compare endoparasites with ectoparasites. Give examples 
  5. What is the difference between the sac-like digestive system and the tubular digestive system? Give examples. Which one is more efficient?
  6. What is the function of the gizzard in the digestive system of cockroaches?
  7. Distinguish between saprophytic and parasitic modes of life.
  8. Define the characteristics processes involved in holozoic nutrition.
  9. Enlist methods of animal nutrition.
  10. Write a short note on fluid feeders?
  11. What are root nodules .give their significance?
  12. Differentiate between nutrients and nutrition.Chapte12 Chapte12 First Half Biology 1st years

Q.3.Write A Detailed Note on the Following. (16 Marks)

  1. Describe nutrition in insectivorous plants.
  2. How does digestion occur in Amoeba?
  3. Write different symbiotic modes of nutrition in plants
  4. How does digestion occur in cockroaches?


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