BHU B.Sc. Biology UET 2019 Question with Complete Solution

Published by Navneet Tripathi on

bhu biology solution

Q1. The main food reserve in fungal cells is :

Options :

  1. Starch
  2. Sucrose
  3. Glucose
  4. Glycogen

Solution

Option (4).  Glycogen is correct

Explanation : Glycogen is a branched polysaccharide serves as a source of energy (reserve food) in Animals, human & fungi starch : another variant of polysaccharides serves as a source of energy in plant tissues.

Glucose is a source of energy for body’s cells and sucrose commonly known as table sugar found in processed food and extracted from sugarcane.

Q2. Which part of moss capsule is haploid :

Options :

  1. Calyptra
  2. Operculum
  3. Annulus
  4. Columella

Solution

Option (3) Annulus is correct

Explanation : As, we know complete life cycle of masses requires two  generation i.e. Gametophytic (sexual) form is haploid and second sporophytic (asexual) form is diploid (2n). In the given option calyptra, operculum and columella are of sprophytic (2n) i.e. in most masses the sporophyte will have these anatomical features so, out of given option only. Annulus is haploid (n).

Q3. Who is the following is related to phycology :

Options :

  1. Birbal Sahni
  2. R. Mishra
  3. K. C. Mehta
  4. M. O. P. Iyengar

Solution

Option (4)  M.O.P.  Iyengar is correct

Explanation : Study of Algae known as Algalogy or phycology & Father is M.O.P Iyengar

       CODE : F M  Fungi study Þ Mycology

                     A P Algae study Þ Phycology

Q4. Cycas and Adiantum resemble each other in having :

Options :

  1. Seeds
  2. Motile sperms
  3. Cambium
  4. Vessels

Solution

Option (2) Motile sperms is correct

Explanation : Cycas is a Gymnosperm & Adiantum is a pteridophyte since, seeds and cambium present in Gymnosperms but absent in Pteridophytes whereas vessel absent in both.

It is the motile sperm present in both that’s why option (2) is correct.

Q5. Cristae are found in which cell organelle ?

Options :

  1. Nucleus
  2. Mitochondria
  3. Chloroplast
  4. Endoplasmic Reticulum

Solution

Option (2) Mitochondria is correct

Explanation : Crista is a folded structure present in inner membrane parts of mitochondria.

Q6. A chlorophyll molecule contains :

Options :

  1. Iron
  2. Sulphur
  3. Calcium
  4. Magnesium

Solution

Option 4 Magnesium is correct.

Explanation :    Iron       –     Haemoglobin

                        Sulphur    –     Most protein’s key component

                        Calcium    –     Element of Bone

Q7. How many citric acid cycles are required for each glucose molecule ?

Options :

  1. Two
  2. Four
  3. Six
  4. Eight

Solution

Option (1) Two is correct

Explanation : Citric acid cycle goes around two times for each molecule of glucose that   enters cellular resperation

  because 1 Glucose molecule = 2 Acetyl CoA

   therefore 2 cycles required per glucose molecule.

Q8. Coconut milk contains :

Options :

  1. Auxins
  2. Cytokinin
  3. Gibberellin
  4. Ethylene

Solution

Option (2) Cytokinin is correct

Explanation : Kinetin is present in coconut milk is the liquid endosperm in unripened fruit & rich in plant hormone cytokinin.

Q9. Pappus is modification of :

Options :

  1. Bracts
  2. Bractedes
  3. Corolla
  4. Calyx

Solution

Option (4) Calyx is correct

Explanation : In Asteraceae family, sepals (unit of calyx) modified into hair like structure called pappus.

eg.  Sunflower

Q10. Potato, tomato, brinjal, mustard and onion belong to how many families :

Options :

  1. Two
  2. Three
  3. Four
  4. Five

Solution

Option (2) : Three is correct

Explanation : From the given option we categorise examples of same families.

                               Potato, brinjal, tomato : Solanaceae

                               Mustard :  Buassicaceae family

                                  Onion  :   Liliaceae family

  Hence, the given question includes 3 families

Q11. At which stage of mitosis, chromatids move towards the poles ?

Options :

  1. Prophase
  2. Metaphase
  3. Anaphase
  4. Telophase

Solution

Option (3) Anaphase is correct

Explanation: During Anaphase chromatids separate and move towards opposite poles.

Q12. Caruncle is found in seeds of :

Options :

  1. Litchi
  2. Ricinus
  3. Citrus
  4. Tomato

Solution

Option (2) Ricinus is correct

Explanation: Caruncle is a structure present in micropylar region in Euphorbiaceae seeds.

Q13. Companion cells are closely associated with :

Options :

  1. Guard cells
  2. Medullary rays
  3. Vessel elements
  4. Sieve elements

Solution

Option (4) Sieve elements is correct Explanation: Companion cells are found in phloem of Flowering plants. Both sieve elements and companion cells are derceved from same meristematic cells that’s why both are closely associated

Q14. How many female flowers are found in a cyathium ?

Options :

  1. One
  2. Two
  3. Three
  4. Many

Solution

Option (1) One is correct

Explanation: Ratio of Female to male flowers in Cyathium is one : many

Q15. Myrosin glands are found in :

Options :

  1. Mustard
  2. Onion
  3. Cactus
  4. Cotton

Solution

Option (1) Mustard is correct

Explanation: Myrosin glands are found in Brassicaceae family helps in protection against herbivores.

           eg. Mustard

Q16. Heterospory and ligulate leaves are the features of :

Options :

  1. Lycopodium
  2. Selaginella
  3. Marsilea
  4. Ferns

Solution

Option (2) Selagioella is correct

Explanation: Heterospory is a condition in which two kinds of spores of morphologically different types are borne by same plant.

Selaginella shows heterospory and have ligulate leaves.

Q17. The stele in Lycopodium stem is :

Options :

  1. Siphonostele
  2. Polystele
  3. Meristele
  4. Protostele

Solution

Option (4) Protostele is correct

Explanation: Stele is defined as central vascular cylinder with or without pith.

 In Lycopodium the stele is protostelic.

Q18. Colchicine is used for :

Options :

  1. Fermentation
  2. Polyploid production
  3. Pesticide Production
  4. Hermone Production

Solution

Option (2) Polypoid production is correct

Explanation: Colchicine is a toxic chemical used to induce polypoidy in plants.

Q19. First CO2 acceptor in C4 plants is :

Options :

  1. Oxalo-acetic acid
  2. Phosphoglyceric acid
  3. Phosphoenol pyruvate
  4. Ribulose 1, 5 diphoshate

Solution

Option (3) Phosphoenol pyruvate is correct

Explanation:  In C4 plant, first Co2 acceptor is a 3- carbon molecule phosphoenol pyruvate (PEP) present in mesophyll cells.

Q20 . Codon is present on :

Options :

  1. t RNA
  2. r RNA
  3. DNA
  4. m RNA

Solution :

Option (4) mRNA is correct.

Explanation:  Codon is present on mRNA

                           tRNA codes for anticodon.

Q21. Enzymes which take part in glycolysis are found in ?

Options :

  1. Vacuole
  2. Mitochandria
  3. Cytoplasm
  4. Endoplasmic reticulum

Solution:

Option (2) Mitochondria is correct.

Explanation: Enzymes participating in Glycolysis called as Glycolytic enzymes located in Mitochondia.

Q22. Which of the following is known as C2 cycle ?

Options :

  1. Glycolate cycle
  2. T C A cycle
  3. Kreb’s  cycle
  4. Calvin cycle

Solution

Option (1) Glycolate cycle is correct

Explanation: Since, photorespiration is a wasteful process, results in loss of Co2 by plants. It is also called as C2 cycle because the first stable product phosphoglysolic acid is 2- carbon compound.  

Q23. Synthesis of DNA takes place in which stage ?

Options :

  1. G- 1 Phase
  2. G- 2 Phase
  3. S- phase
  4. G- 1 and S- phase

Solution

Option (3) S- phase is correct

Explanation: S- phase is the phase between Cn1 & Cn2 during which replccation of nuclear DNA & synthesis of hestone protein takes place. This phase is also known as DNA synthesis phase.

Q24. Which pyramid is always upright?

Options :

  1. Pyramid of Number
  2. Pyramid of Biomass
  3. Pyramid of Energy
  4. Pyramid of Energy and Number

Solution

Option (3) Pyramid of Energy is correct

Explanation : Pyramid of Energy is always upright because during transfer of energy from one trophic level to another, some energy is always lost in the form of heat in each step.

Q25. How much energy is transferred from one trophic level to another ?

Options :

  1. 5%
  2. 10%
  3. 15%
  4. 20%

Solution

Option (2) 10% is correct

Explanation : During one trophic level to other 10% energy is transferred and rest is lost as through metabolic processes as treat.

Q26. Axolotl is the larva of :

Options :

  1. Ambystoma
  2. Round worm
  3. Amphioxus
  4. Silk moth

Solution

Option (1) Ambystoma is correct

Explanation: Axolotl is the larva of Amblystrma tigrinum (tiger salamander). It shows structural features similar to typical salamander larvae.

Q27. Which of the following is the feature of Mammalia ?

Options :

  1. Presence of paired pharyngeal gill slits in adults
  2. Cranium and vertebral column is cartilaginous
  3. Presence of mid digital hair
  4. Presence of mammary glands

Solution

Option (4) Presence of mammary glands is correct

Explanation: The most unique and characteristics feature of mammalia is the presence of mammary gland.

Q28. Ostrich belongs to the class :

Options :

  1. Mammalia
  2. Aves
  3. Reptilia
  4. Archaeopteryxia

Solution

Option (2) Aves is correct

Explanation: Aves class includes crow, Columba (Pigeon), Psittacula (parrot), Struthio (ostrich) etc.

Q29. The concept of binomial nomenclature was given by :

Options :

  1. Lamarck
  2. Darwin
  3. Linneaus
  4. Watson

Solution

Option (3) Linneaus is correct

Explanation: The concept of bionomial nomenclature was given by Carolus Linnaeus

Q30. Which one of the following ecological pyramids can never be inverted ?

Options :

  1. Pyramid of size
  2. Pyramid of energy
  3. Pyramid of biomass
  4. Pyramid of number

Solution

Option (2) Pyramid of energy is correct

Pyramid of Energy is always upright because during transfer of energy from one trophic level to another, some energy is always lost in the form of heat in each step.

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Navneet Tripathi

Pursuing B.Sc. B.Ed from Central University of South Bihar, Gaya. Co-Founder: Dynamic Education(YouTube Channel ) Aim: Make learning easy and accessible to all

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