Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
Hardest substance in plant kingdom is |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
The seminiferous tubules of the testis open into the vasa efferentia by |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
The following graph of relative concentrations of the four hormones present in the blood plasma of a woman during her menstrual cycle. |
Identify the hormones A, B, C and D. |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. | |||
Match the following columns. | |||
Column I | Column II | ||
A | Calyx | 1 | Carpel |
B | Corolla | 2 | Petal |
C | Androecium | 3 | Sepal |
D | Gynoecium | 4 | Stamen |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
What is the fate of the male gametes discharged in the synergid? |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
Infertile couples can now have children with the help of |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
Which of the following is abstinence method for birth control? |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
In a dihybrid cross, if you get 9:3:3:1 ratio it denotes that |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
Mendel's law of independent assortment holds good for genes situated on the |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
Sex-linked characters have one distinct feature. |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
The person with Turner's syndrome has |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
A man having Klinefelter's syndrome is |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
Two genes W and 'B' are linked. In a dihybrid cross involving these two genes, the F1 heterozygote is crossed with homozygous recessive parental type (aa bb). What would be the ratio of offspring in the next generation? |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
The cross which will produce most pink flowers. |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. | |||
Match the following columns. | |||
Column I | Column II | ||
A | Exon | 1 | Coding sequence |
B | Intron | 2 | Non-coding sequence |
C | Genetic code | 3 | Triplet bases on mRNA |
D | DNA packaging | 4 | Nucleosome |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
The net electric charge on DNA and histones is |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
Which of the following rRNAs act as structural RNA as well as ribozyme in bacteria? |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
Alee Jeffreys used a satellite DNA as probe that shows very high degree of polymorphism. It was called as |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
Identify A, B and C |
Direction: Each of the question has four options out of which only one is correct. Select the correct option as your answer. |
Basis of DNA fingerprinting |
Direction: Each of these questions contains two statements : |
Assertion and Reason. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below. |
Assertion [A] Zona pellucida does not disappear when blastocyst reaches the uterus. |
Reason [R] Role of zona pellucida is to check the implantation of the blastocyst at the vaginal site. |
Direction: Each of these questions contains two statements : |
Assertion and Reason. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below. |
Assertion [A] Barrier methods prevent conception. |
Reason [R] These prevent the physical meeting of sperm and ova. |
Direction: Each of these questions contains two statements : |
Assertion and Reason. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below. |
Assertion [A] Insects visit flowers to gather nectar. |
Reason [R] Attraction to flowers prevents the insects from damaging other parts of the plant. |
Direction: Each of these questions contains two statements : |
Assertion and Reason. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below. |
Assertion [A] Turner's syndrome is caused due to the absence of the X chromosome. |
Reason [R] Such individuals have rudimentary ovaries and lack secondary sexual characteristics. |
Direction: Each of these questions contains two statements : |
Assertion and Reason. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below. |
Assertion [A] Only sense strand of DNA is copied into mRNA. |
Reason [R] The antisense strand plays a role in replication. |
Direction: Observe the diagram below of LS of the seed of maize and answer the questions that follows. |
Identify the incorrect match. |
Direction: Observe the diagram below of LS of the seed of maize and answer the questions that follows. |
Assertion [A] Maize is one-seeded fruit with pericarp firmly fused with testa. |
Reason [R] Hilum and micropyle are not visible in maize seed. |
Direction: Observe the diagram below of LS of the seed of maize and answer the questions that follows. |
Coleorhiza is a cap-like covering over |
Direction: Observe the diagram below of LS of the seed of maize and answer the questions that follows. |
The part that separates the embryo region from the endosperm region in the seed of maize is |
Direction: Observe the diagram below of LS of the seed of maize and answer the questions that follows. |
Aleurone layer in maize grain is specially rich in |
Direction: Read the following and answer the questions that follows. |
DNA is made up of millions of nucleotides. These are molecules composed of a deoxyribose sugar, with a phosphate and a base (or nucleobase) attached to it. These nucleotides are attached to each other in strands via phosphodiester bonds to form a 'sugar phosphate backbone'. DNA replication also known as semiconservative replication is the process by which DNA is essentially double. It is an important process that takes place within the dividing cell. |
Which among the following pairs of nitrogen bases are correct? |
Direction: Read the following and answer the questions that follows. |
DNA is made up of millions of nucleotides. These are molecules composed of a deoxyribose sugar, with a phosphate and a base (or nucleobase) attached to it. These nucleotides are attached to each other in strands via phosphodiester bonds to form a 'sugar phosphate backbone'. DNA replication also known as semiconservative replication is the process by which DNA is essentially double. It is an important process that takes place within the dividing cell. |
Assertion [A] The double helix model of DNA resembles a twisted ladder. |
Reason [R] In DNA helix, purine and pyrimidines are found. |
Direction: Read the following and answer the questions that follows. |
DNA is made up of millions of nucleotides. These are molecules composed of a deoxyribose sugar, with a phosphate and a base (or nucleobase) attached to it. These nucleotides are attached to each other in strands via phosphodiester bonds to form a 'sugar phosphate backbone'. DNA replication also known as semiconservative replication is the process by which DNA is essentially double. It is an important process that takes place within the dividing cell. |
DNA replication is semiconservative because |
Direction: Read the following and answer the questions that follows. |
DNA is made up of millions of nucleotides. These are molecules composed of a deoxyribose sugar, with a phosphate and a base (or nucleobase) attached to it. These nucleotides are attached to each other in strands via phosphodiester bonds to form a 'sugar phosphate backbone'. DNA replication also known as semiconservative replication is the process by which DNA is essentially double. It is an important process that takes place within the dividing cell. |
Which one of the following correctly represents the manner of replication of DNA? |
Direction: Read the following and answer the questions that follows. |
DNA is made up of millions of nucleotides. These are molecules composed of a deoxyribose sugar, with a phosphate and a base (or nucleobase) attached to it. These nucleotides are attached to each other in strands via phosphodiester bonds to form a 'sugar phosphate backbone'. DNA replication also known as semiconservative replication is the process by which DNA is essentially double. It is an important process that takes place within the dividing cell. |
Semiconservative replication of DNA was first demonstrated in |
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