Biology Questions
Which one of the following equations represents the Verhulst-Pearl Logistic Growth of population?
The blue and white selectable markers have been developed which differentiate recombinant colonies from non-recombinant colonies on the basis of their ability to produce colour in the presence of a chromogenic substrate. Given below are two statement
Match List-I with List-II. List-I List-II A. Progesterone I. Pars intermedia B. Relaxin II. Ovary C. Melanocyte stimulating hormone III. Adrenal Medulla D. Catecholamines IV. Corpus luteum
Which of the following microbes is NOT involved in the preparation of household products? A. Aspergillus niger B. Lactobacillus C. Trichoderma polysporum D. Saccharomyces cerevisiae E. Propionibacterium sharmanii
Twins are born to a family that lives next door to you. The twins are a boy and a girl. Which of the following must be true?
Frogs respire in water by skin and buccal cavity and on land by skin, buccal cavity and lungs. Choose the correct answer:
Which factor is important for termination of transcription?
Read the following statements on plant growth and development. A. Parthenocarpy can be induced by auxins. B. Plant growth regulators can be involved in promotion as well as inhibition of growth. C. Dedifferentiation is a pre-requisite for re-differen
Which of the following enzyme(s) are NOT essential for gene cloning? A. Restriction enzymes B. DNA ligase C. DNA mutase D. DNA recombinase E. DNA polymerase
Which of the following statements about RuBisCO is true?
Given below are two statements: Statement I: In ecosystem, there is unidirectional flow of energy of sun from producers to consumers. Statement II: Ecosystems are exempted from 2nd law of thermodynamics.
In frog, the Renal portal system is a special venous connection that acts to link:
In bryophytes, the gemmae help in which one of the following?
Which of the following type of immunity is present at the time of birth and is a non-specific type of defence in the human body?
Role of the water vascular system in Echinoderms is: A. Respiration and Locomotion B. Excretion and Locomotion C. Capture and transport of food D. Digestion and Respiration E. Digestion and Excretion
Which of the following hormones released from the pituitary is actually synthesized in the hypothalamus?
Match List-I with List-II. List-I List-II A. The Evil Quartet I. Cryopreservation B. Ex situ conservation II. Alien species invasion C. Lantana camara III. Causes of biodiversity losses D. Dodo IV. Extinction
Who proposed that the genetic code for amino acids should be made up of three nucleotides?
Match List-I with List-II. List-I List-II A. Pteridophyte I. Salvia B. Bryophyte II. Ginkgo C. Angiosperm III. Polytrichum D. Gymnosperm IV. Salvinia
Why can’t insulin be given orally to diabetic patients?
Consider the following statements regarding function of adrenal medullary hormones: A. It causes pupillary constriction B. It is a hyperglycemic hormone C. It causes piloerection D. It increases/strength of heart contraction
Which one of the following is the characteristic feature of gymnosperms?
What is the main function of the spindle fibers during mitosis?
Given below are two statements: Statement I: Fig fruit is a non-vegetarian fruit as it has enclosed fig wasps in it. Statement II: Fig wasp and fig tree exhibit mutual relationship as fig wasp completes its life cycle in fig fruit and fig fruit gets
After maturation, in primary lymphoid organs, the lymphocytes migrate for interaction with antigens to secondary lymphoid organ(s)/tissue(s) like:
Which of the following is an example of a zygomorphic flower?
How many meiotic and mitotic divisions need to occur for the development of a mature female gametophyte from the megaspore mother cell in an angiosperm plant?
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Cells of the tapetum possess dense cytoplasm and generally have more than one nucleus. Reason (R): Presence of more than one nucl
With the help of given pedigree, find out the probability for the birth of a child having no disease and being a carrier (has the disease mutation in one allele of the gene) in F₃ generation.
Sweet potato and potato represent a certain type of evolution. Select the correct combination of terms to explain the evolution.
Which of the following is the unit of productivity of an Ecosystem?
The protein portion of an enzyme is called:
Match List - I with List - II. List - I List - II A. Heart I. Erythropoietin B. Kidney II. Aldosterone C. Gastro-intestinal tracts III. Atrial natriuretic factor D. Adrenal Cortex IV. Secretin
The first menstruation is called:
Histones are enriched with:
Genes R and Y follow independent assortment. If RRYY produce round yellow seeds and rryy produce wrinkled green seeds, what will be the phenotypic ratio of the F2 generation?
Silencing of specific mRNA is possible via RNAi because of:
Identify the statement that is NOT correct.
Given below are two statements: Assertion (A): All vertebrates are chordates but all chordates are not vertebrate. Reason (R): The members of subphylum vertebrata possess notochord, during the embryonic period, the notochord is replaced by a cartilag
Match List I with List II. List I List II A. Scutellum I. Persistent nucellus B. Non-albuminous seed II. Cotyledon of Monocot seed C. Epiblast III. Groundnut D. Perisperm IV. Rudimentary cotyledon
Given below are two statements: Assertion (A): The primary function of the Golgi apparatus is to package the materials made by the endoplasmic reticulum and deliver it to intracellular targets and outside the cell. Reason (R): Vesicles containing mat
All living members of the class Cyclostomata are:
Consider the following: A. The reductive division for the human female gametogenesis starts earlier than that of the male gametogenesis. B. The gap between the first meiotic division and the second meiotic division is much shorter for males compared
Match List I with List II. List I List II A. Adenosine I. Nitrogen base B. Adenylic acid II. Nucleotide C. Adenine III. Nucleoside D. Alanine IV. Amino acid
Given below are two statements: Statement I: The DNA fragments extracted from gel electrophoresis can be used in construction of recombinant DNA. Statement II: Smaller size DNA fragments are observed near anode while larger fragments are found near t
Neoplastic characteristics of cells refers to: A. A mass of proliferating cell B. Rapid growth of cells C. Invasion and damage to the surrounding tissue D. Those confined to original location
Match List-I with List-II. List-I List-II A. Alfred Hershey and Martha Chase I. Streptococcus pneumoniae B. Euchromatin II. Densely packed and dark-stained C. Frederick Griffith III. Loosely packed and light-stained D. Heterochromatin IV. DNA as gene
Who is known as the father of Ecology in India?
Each of the following characteristics represent a Kingdom proposed by Whittaker. Arrange the following in increasing order of complexity of body organization. A. Multicellular heterotrophs with cell wall made of chitin. B. Heterotrophs with tissue/or
Which one of the following enzymes contains ‘Haem’ as the prosthetic group?