11th Biology

Biology FSc 1st Year Guess Paper 2020

Short Questions Guess Paper for Fsc Part-1 Biology


  • Differentiate b/w population & community.
  • How does theory theory differ from law?
  • What is integrated disease management?
  • Differentiate b/w chemotherapy, radiotherapy & gene therapy.
  • What is hydroponic technique? Give its importance.
  • Write a note on vaccination.
  • Define biome with an example.
  • Define phyletic lineage & biodiversity.
  • Differentiate b/w deductive reasoning & inductive reasoning.


  • Define biochemistry.
  • Give its importance.
  • Differentiate b/w glycosidic & peptide bond.
  • Define lipids.
  • Give two roles of waxes Differentiated b/w saturated & unsaturated fatty acid.
  • Give the structure of lecithin.


  • What is the active site of an enzyme?
  • Differentiate b/w apoenzyme & holoenzyme.
  • What are cofactor & activator of enzyme?
  • How does an enzyme accelerate a metabolic reaction?
  • Write four characteristics of enzymes.
  • What is induced fit model? Who proposed this model?
  • How does high temperature affect enzyme activities?
  • What is the role of pH in enzyme action?
  • Give optimum pH values for any two enzyme actions?
  • What are enzyme inhibitors? Give two examples.
  • Differentiate b/w reversible & irreversible enzyme inhibitors.
  • Differentiate b/w competitive & non-competitive enzyme inhibitors?


  • Write down salient features of cell theory.
  • Differentiate bw phagocytosis & pinocytosis.
  • Give chemical composition of primary & secondary cell wall.
  • Give three functions of smooth endoplasmic reticulum.
  • Define storage diseases with two examples.
  • What is location of centrioles in the cell & what is their role?
  • Differentiate b/w chromoplasts & leucoplasts.
  • Differentiate b/w cisternae & cristae.
  • What are peroxisome, polysome & ribosome?


  • Define species & virology with examples.
  • Give biological classification of corn.
  • What is bionomial nomenclature?
  • What are two rules of nomenclature?
  • What are prions?
  • Differentiate b/w lytic phage & lysogenic phage.
  • Write down symtoms & prevention of hepatitis?


  • Write four postulates of germ theory.
  • What are mesosomes?
  • Describe their function.
  • Write misuse of antibiotics.
  • What are trichomes?
  • Give the structure & function of Heterocysts?
  • What are super blue-green algae?
  • Give its importance.


  • What are choanoflagellates?
  • What are tritonymphs?
  • Give their importance.
  • Write two characteristics of ciliates.
  • Differentiate b/w micronucleus & macronucleus.
  • Differentiate b/w foraminiferas & actinopods.
  • What are apicomplexans?
  • Give one example.
  • How algae differ from plants?
  • What are red tides?
  • Give structure & function of diatoms.
  • Also write three characteristics of diatoms.
  • What are kelps?
  • Name the parts of thaullus of a kelp.
  • Green algae are considered ancestral organism of green land plants, why?
  • What is chlorella?
  • Give its significance.
  • What is importance of algae?


  • What are lichens?
  • Give their ecological importance.
  • Differentiate b/w karyogamy & plasmogamy.
  • Differentiate b/w rusts & smuts.
  • What is budding & para sexuality?
  • What are toad stools? Give example.
  • What is histoplasmosis? Give its causes.
  • Give scientific name of yeast used in genetic research.
  • Define hyphae. Give their two types.
  • What is mycorrhiza?
  • Give its importance What are dikaryotic hyphae? Give example


  • Why bryophytes plants are called amphibious plants?
  • How spores of mosses differ from spores of liver worts?
  • What is alternation of generation?
  • Give its significance.
  • Why sphenopsida are called arthophytes?
  • Differentiate b/w microphylls & megaphylls.
  • Define double fertilization in angiosperms.
  • Give its importance.
  • Differentiate b/w monocot stem & dicot stem.


  • Write the importance of sponges.
  • Define polymorphism with example.
  • Write down the importance of corals.
  • Differentiate b/w infestation & disinfestations.
  • Write names and uses of any two useful insects.
  • Define nymph & metamorphosis.
  • Give three characteristics of chordates.
  • Give the role of swim bladder in bony fishes.
  • Give two commercial importance of sharks.
  • Define regeneration & maderporite.
  • Write names and harms of any two harmful molluscus.
  • Differentiate b/w polyps & medusae.
  • Differentiate b/w coelmates & acoelomates.
  • Differentiate b/w diploblastia & triploblastic animals.


  • Define bioenergetics
  • Differentiate bw photosynthesis & respiration.
  • Define photosynthesis with equation.
  • What is compensation point? Where it occurs?
  • Write down the molecular formula for chlorophyll “a” and b”.
  • What are necessary pigments in plants? Give their importance.
  • Differentiate b/w absorption & action spectrum.
  • Differentiate b/w photosystem and photosystem
  • What is Z-scheme? Why is it called so?
  • What is fermentation? Explain its types.


  • Distinguish b/w nutrients & nutrition.
  • Write components & functions of saliva.
  • Name various types of the salivary gland in man.
  • Differentiate b/w peristalsis & anti-peristalsis.
  • How hunger pangs are caused?
  • What is heart burn or pyrosis?
  • Name types of cells present in gastric glands.
  • What prevents the wall of stomach from being digested?
  • How secretion is produced in man?
  • What is its effects on pancreas in man?
  • What is the role of liver in the digestion of food?


  • Differentiate b/w organismic and cellular respiration?
  • How is air better respiratory medium than water?
  • What is photorespiration?
  • Name organelles involved in it.
  • Write the names of its products.
  • What is rubisco.
  • Write its importance.
  • Define respiratory surface.
  • Give three properties.
  • Differentiate b/w cutaneous & pulmonary respiration in frog.
  • What are counter current exchange and parabronchi?
  • Differentiate b/w diaphragm and pleura.
  • Name some respiratory disorder and explain one.
  • What is emphysema? Write its symptoms.
  • What is diving reflex?
  • What changes occur in animal during diving reflex.


  • Differentiate b/w water potential & solute potential.
  • Differentiate b/w plasmolysis & deplasmolysis.
  • Differentiate b/w apoplast & symplast pathway.
  • Differentiate b/w single & double circuit heart.
  • What are blue babies?
  • What is brain hemorrhage?
  • Give its two preventive measures.

Most Important Long Questions – Biology FSc 1st Year

1. (a).How study of biology helped mankind to improve production of food.
(b).Define cloning. Discuss its types & importance.

2. (a).Describe the importance of water of life.
(b).Describe acylglycerols in detail.

3. (a).Describe primary & secondary structure of protein.
(b).Compare DNA and RNA. Explain different types of RNA.

4. (a).Write a note on Endoplasmic reticulum.
(b). What are plastids? Explain the structure & function of chloroplast

5. (a).Describe the structure and function of mitochondria.
(b).Differentiate b/w prokaryotic & eukaryotic cells.

6. (a).Describe life cycle of a bacteriophage.
(b).How HIV is transmitted? Give a sketch of infection cycle of HIV?

7. (a).Define hepatitis. Describe its symptoms, causes & types
(b).Describe different classes of bacteria on the basis of flagela.

8. (a). Discuss the process of nutrition in bacteria.
(b).Describe different physical & chemical methods to control bacteria.

9. (a).Write down characteristics of cyanobacteria.
(b).Explain taxonomic status of fungi.

10. (a).Discuss different methods of asexual reproduction in fungi.
(b).Write four economic gains & losses due to fungi.

11. (a). Give adaptations of fungi on land.
(b).Describe land adaptations of bryophytes.

12. (a). What is altermation of generation? Give its significance.
(b).How evolution of leaf took place?

13. (a).Enlist steps involved in evolution of seed.
(b).Describe in detail cyclic & non-cyclic phosphorylation.

14. (a).Draw and describe Calvin cycle in photosynthesis.
(b).What is glycolysis? Sketch its various steps.

15. (a).Draw sketch and explain Krebs cycle.
(b).Give digestion in cockroach.

16. (a).Describe digestion in oral cavity of man.
(b).Describe absorption of digested food in small intestine.

17. (a). Write a note on (i) Anorexia nervosa (ii) Bulimia nervosa (iii) Obesity
(b). Why transpiration is necessary evil?

18. (a).Explain various functions of human blood.
(b).Describe lymphatic system. Write its functions.
(C).Define immunity. Give its types.

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Chapter 13 (Gaseous Exchange) F.Sc 1st Year Biology Short Questions

Level: F.Sc (Pre-Engg)
Class: 1st Year
Board: Punjab Textbook Board
Subject: Biology
Chapter 13: Gaseous Exchange
Type: Short Questions
Author: Kiran Mehtab
Pages: 6
PDF Size: 2 MB

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In human being what is the total inside capacity of lungs when fully inflated?

In an adult human being when the lungs are fully inflated the total inside capacity of lung is about 5 litres.

What is the residual volume of lungs?

There is a residual volume of 1.5 litres even during exercise which can be expelled.

What are two properties of a respiratory surface? or Write four properties of respiratory surface.

  • The respiratory surface should be wet
  • It should be thin
  • It should be well ventilated
  • It should have large number of blood capillaries in which blood flows

How does gaseous exchange occur in frog?

In frog, the gaseous exchange occurs through the lungs but these structures are not very efficient. Therefore, the lungs are supplemented by skin and buccal chamber which are richly supplied with blood vessels. These blood carrying sites are exposed to water carrying oxygen for the exchange of gases.

Chapter 12 (Nutrition) F.Sc 1st Year Biology Short Questions

Level: F.Sc (Pre-Engg)
Class: 1st Year
Board: Punjab Textbook Board
Subject: Biology
Chapter 12: Nutrition
Type: Short Questions
Author: Kiran Mehtab
Pages: 10
PDF Size: 2 MB

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What are the main functions of the oral cavity? or Give oral cavity.

The oral cavity performs several functions, the most important are the

  • selection of food
  • grinding or mastication
  • lubrication
  • digestion

What is the role of tongue in digestion in oral cavity?

Tongue being sensory and muscular organ plays the most important role in selection of food through its taste buds.

How grinding or mastication of food is useful?

This is useful because:

  • the oesophagus allows relatively small pieces to pass through
  • food becomes easier to digest when it is in small particles, because small pieces have much more surface for the enzyme to attack and much less solid material to penetrate.

Give the names and location of salivary glands found in man.

  • sublingual glands situated below the tongue
  • submaxillary glands behind the jaws
  • parotid glands in front of the ears

Chapter 14 (Transport) F.Sc 1st Year Biology Short Questions

Level: F.Sc (Pre-Engg)
Class: 1st Year
Board: Punjab Textbook Board
Subject: Biology
Chapter 14: Transport
Type: Short Questions
Author: Kiran Mehtab
Pages: 10
PDF Size: 2 MB

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What is haemorrhage? Give its effects.

It is the discharge of blood from blood vessels. Especially important is, the brain haemorrhage which results from bursting of any of the arteries supplying the brain. Slow haemorrhages may not cause decrease in the volume of blood, as this may be replaced as rapidly as it is lost. However, the lost red blood cells and their pigment, haemoglobin, may not be replaced and often the first signs and symptoms of severe chronic blood loss are those of anaemia: tiredness, pallor, and breathlessness on exertion. Severe haemorrhage, if untreated, may result in fainting and even death.

What are the major components of lymphatic system?

The system comprises of lymph capillaries, lymph vessels, lymphoid masses, lymph nodes, and lymph – the fluid which flows in the system.

What is lymph?

The fluid that enters the lymph capillaries is called lymph.

Chapter 11 (Bioenergetic) F.Sc 1st Year Biology Short Questions

Level: F.Sc (Pre-Engg)
Class: 1st Year
Board: Punjab Textbook Board
Subject: Biology
Chapter 11: Bioenergetic
Type: Short Questions
Author: Kiran Mehtab
Pages: 6
PDF Size: 2 MB

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How thylakoids and chemiosmosis are linked?

Thylakoid membranes are involved in ATP synthesis by chemiosmosis.

Name the phases of Calvin-Benson cycle?

The Calvin-Benson cycle or Calvin cycle can be divided into three phases:

  • Carbon fixation
  • Reduction
  • Regeneration of CO2 acceptor (RuBP)

Define redox potential.

Redox potential (also called oxidation-reduction potential or ORP) is an integrated measure of the balance between total oxidants and total reductants in a biological system, such as the human body.

What is fermentation and its two types? or What is anaerobic respiration?

Respiration that occurs in the absence of oxygen is called anaerobic respiration or fermentation. There are two types of fermentation i.e., alcoholic fermentation and lactic acid fermentation.

Differentiate between photolysis and glycolysis.

The water-splitting step of photosynthesis that releases oxygen is called photolysis. While during respiration splitting of a glucose molecule into two pyruvic acids is called glycolysis