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Which one of the following pairs of structures is correctly matched with their correct description?CorrectIncorrect
Identify the components labelled A, B, C and D in the diagram below from the list 1 to 8 given alongwith
1. Cristae of mitochondria
2. Inner membrane of mitochondria
4. Smooth endoplasmic reticulum
5. Rough endoplasmic reticulum
6. Mitochondrial matrix
7. Cell vacuole
Fastest distribution of some injectible material/medicine and with no risk of any kind can be achieved by injecting it into theCorrectIncorrect
Which one of the following statements about the particular entity is true?CorrectIncorrect
Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character.CorrectIncorrect
Leguminous plants are able to fix atmospheric nitrogen through the process of symbiotic nitrogen fixation. Which one of the following statement is not correct during the process of nitrogen fixation?CorrectIncorrect
Which one of the following is xerophytic plant in which the stem is modified into the flat green and succulent structure?CorrectIncorrect
The figure given below shows the conversion of a substrate into product by an enzyme. In which one of the four options (a−d), the components of reactions labelled as A, B, C and D are identified correctly?CorrectIncorrect
Which of the following is used in gene cloning?CorrectIncorrect
When domestic sewage mixes with river waterCorrectIncorrect
Given below are four statements (A – D) each with one or two blanks. Select the option which correctly fills up the blanks in two statements.
(A) Wings of butterfly and birds look alike and are the results of —(i) — evolution.
(B) Miller showed that CH₄, H₂, NH₃ and —(i) —, when exposed to electric discharge in a flask resulted information of —(ii) —
(C) Vermiform appendix is a —(i) —organ and an—(ii) — evidence of evolution.
(D) According to Darwin evolution took place due to —(i) — and —-(ii) — of the fittest.CorrectIncorrect
Aestivation of petals in the flower of cotton is correctly shown inCorrectIncorrect
In which one of the following organism, its excretory organs are correctly stated?CorrectIncorrect
Examine the figures A, B, C and D. In which one of the four options, all the items A, B, C and D are correct?CorrectIncorrect
The most apparent change during the evolutionary history of Homo sapiens is traced inCorrectIncorrect
Which one of the following is now being commercially produced by biotechnological procedures?CorrectIncorrect
The correct floral formula of soybean isCorrectIncorrect
If for some reason the parietal cells of the gut epithelium become partially non-functional, what is likely to happen?CorrectIncorrect
Which one of the following is most appropriately defined?CorrectIncorrect
Read the following four statements, A, B, C and D select the right option having both correct statements.
A. Z scheme of light reaction takes place in presence of PS-I only.
B. Only PS-I is functional in cyclic photophosphorylation.
C. Cyclic photophosphorylation results into synthesis of ATP and NADPH₂.
D. Stroma lamellae lack PS-II as well as NADPCorrectIncorrect
Which one of the following techniques is safest for the detection of cancer?CorrectIncorrect
Signals from fully developed foetus and placenta ultimately lead to parturition which requires the release ofCorrectIncorrect
Select the correct matching of a hormone its source and function.CorrectIncorrect
In eukaryotic cell transcription, RNA splicing and RNA capping take place inside theCorrectIncorrect
Given below are four statements (A-D) regarding human blood circulatory system
A. Arteries are thick-walled and have narrow lumen as compared to veins.
B. Angina is acute chest pain when the blood circulation to the brain is reduced.
C. Persons with blood group –AB can donate blood to any person with any blood group under ABO system.
D. Calcium ions play a very important role in blood clotting.
Which two of the above statements are correct?CorrectIncorrect
In human female, the blastocystCorrectIncorrect
The haemoglobin content per 100 mL of blood of a normal healthy human adult isCorrectIncorrect
An example of endomycorrhiza isCorrectIncorrect
One of the commonly used plant growth hormone in tea plantations isCorrectIncorrect
Study the cycle shown below and select the option which gives correct words for all the four blanks, A, B, C and D.CorrectIncorrect
Jaundice is a disorder ofCorrectIncorrect
Kranz anatomy is one of the characteristics of the leaves ofCorrectIncorrect
In Antirrhinum, two plants with pink flowers were hybridised. The F₁ plants produced red, pink and white flowers in the proportion of 1 red, 2 pink and 1 white. What could be the genotype of the two plants used for hybridisation? Red flower colour is determined by RR, and white by rr genes.CorrectIncorrect
Transport of food material in higher plants takes place throughCorrectIncorrect
Which one of the following is monoecious?CorrectIncorrect
A cross in which an organism showing a dominant phenotype is crossed with the receseive parent in order to know its genotype is calledCorrectIncorrect
The Indian rhinoceros is a natural inhabitant of which one of the Indian states?CorrectIncorrect
Study the pathway given below
In which of the following options, correct words for all the three blanks A, B and C are indicated?CorrectIncorrect
Black (stem) rust of wheat is caused byCorrectIncorrect
Secretions from which one of the following are rich in fructose, calcium and some enzymes?CorrectIncorrect
A person suffering from disease caused by Plasmodium, experiences recurring chill and fever at the time when theCorrectIncorrect
ABO blood grouping is controlled by gene I, which has three alleles and show codominance. There are six genotypes. How many phenotypes in all are possible?CorrectIncorrect
Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?CorrectIncorrect
An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of cell shape is calledCorrectIncorrect
Examine the figures (A-D) given below and select the right option out of a-d, in which all the four structures A, B, C and D are identified correctly.CorrectIncorrect
Root development is promoted byCorrectIncorrect
Consider the following four statements A, B, C and D and select the right option for two correct statements.
A. In vexillary aestivation, the large posterior petal is called-standard, two lateral ones are wings and two small anterior petals are termed keel.
B. The floral formula for Liliaceae is
C. In pea flower, the stamens are monadelphous.
D. The floral formula for Solanaceae isCorrectIncorrect
Given below is the diagram of a bacteriophage. In which one of the options, all the four parts A, B, C and D are correct?CorrectIncorrect
In genetic engineering, a DNA segment (gene) of interest, is transferred to the host cell through a vector. Consider the following four agents (A-D) in this regard and select the correct option about which one or more of these can be used as a vector/vectors.
A. A bacterium
Which one of the following cannot be used for preparation of vaccines against plague?CorrectIncorrect
The fruit fly, Drosophila melanogaster was found to be very suitable for experimental verification of chromosomal theory of inheritance by Morgan and his colleagues becauseCorrectIncorrect
The lac operon consists ofCorrectIncorrect
Crocodile and penguin are similar to whale and dogfish in which one of the following features?CorrectIncorrect
Select the answer with correct matching of the structure, its location and function.CorrectIncorrect
Select the correct combination of the statements (A-D) regarding the characteristics of certain organisms.
A. Methanogens are Archaebacteria, which produce methane in marshy areas.
B. Nostoc is a filamentous blue-green algae, which fixes atmospheric nitrogen.
C. Chemosynthetic autotrophic bacteria synthesize cellulose from glucose.
D. Mycoplasma lack a cell wall and can survive without oxygen.CorrectIncorrect
Which one of the following is the correct description of a certain part of a normal human skeleton?CorrectIncorrect
Vegetative propagation in Pistia occurs byCorrectIncorrect
Given below is the diagram of a stomatal apparatus. In which of the following, all the four parts labelled as A, B, C and D are correctly identified?CorrectIncorrect
Which of the following representations shows the pyramid of numbers in a forest ecosystem?CorrectIncorrect
The 3ʹ −5ʹ phosphodiester linkages inside a polynucleotide chain serve to joinCorrectIncorrect