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Biology: CUET Mock Test - 4 - CUET MCQ


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40 Questions MCQ Test CUET Mock Test Series - Biology: CUET Mock Test - 4

Biology: CUET Mock Test - 4 for CUET 2024 is part of CUET Mock Test Series preparation. The Biology: CUET Mock Test - 4 questions and answers have been prepared according to the CUET exam syllabus.The Biology: CUET Mock Test - 4 MCQs are made for CUET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Biology: CUET Mock Test - 4 below.
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Biology: CUET Mock Test - 4 - Question 1

What does a connective possess?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 1

Connective also known as sterile parenchyma tissue possesses a vascular strand. This is the tissue that attaches 2 anther lobes together. Since monothecous anthers are made of only 1 anther lobe, it does not have connective.

Biology: CUET Mock Test - 4 - Question 2

Which of the following criterion needn’t be fulfilled by the genetic material?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 2

A genetic material must be both chemically and structurally stable. It must be able to replicate. It should provide scope for the evolutionary changes. But it should also be able to express itself in the form of “Mendelian characters” and not “Bohr’s characters”. These Mendelian characters refer to the three laws that were proposed by Gregor Mendel.

Biology: CUET Mock Test - 4 - Question 3

Which of the following is not a type of RNA?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 3

There are three different types of RNA. They are mRNA (messenger RNA), rRNA (ribosomal RNA) and tRNA (transfer RNA). sRNA is a small ribosomal RNA. They are produced by the bacterium. The three different types of RNA are required for the synthesis of protein.

Biology: CUET Mock Test - 4 - Question 4

What are pollen sacs called?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 4

Pollen sacs or microsporangia are present within the anther lobes. Each anther lobe has 2 microsporangia. It’s very rare to see a single microsporangium in an anther lobe. Example-Wolffia.

Biology: CUET Mock Test - 4 - Question 5

Which of the following can be calculated based on crosses?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 5

Recombination frequency is a simple measure that can be obtained by analyzing the progeny of the cross. It can then be used to determine the linkage, genetic maps, and gene density.

Biology: CUET Mock Test - 4 - Question 6

Which of the following is not a characteristic of RNA?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 6

The hydrogen atom which is attached to the hydroxyl group on the 2’- C atom of the RNA can be easily deprotonated. The presence of larger grooves in RNA is also a reason for it not being stable under alkaline conditions. But under the same condition, the DNA molecule will be stable for it has smaller grooves which cannot be easily attacked or penetrated.

Biology: CUET Mock Test - 4 - Question 7

What is the role of tRNA?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 7

The role of mRNA is to provide the template strand. The role of tRNA is to bring the amino acids and read the genetic code. rRNA plays the structural and catalytic role during the process of translation.

Biology: CUET Mock Test - 4 - Question 8

Who came up with the idea of “adapter molecule”?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 8

Amino acids do not have any structural specialties to read a code. Francis Crick came up with an ideology that an adapter molecule will be present. This adapter molecule will be capable of both reading the code and also on binding itself to the specific amino acid.

Biology: CUET Mock Test - 4 - Question 9

Which of the following cannot be determined from the recombination frequency?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 9

Recombination frequencies provide an inside on the location of genes on the chromosome. It does not provide any information about the possible functions and hence associated phenotypes of a gene.

Biology: CUET Mock Test - 4 - Question 10

Which of the following criterion cannot be fulfilled by protein?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 10

Proteins form polypeptide chains by the peptide bond formation between amino acids. Their different folding statures results in the formation of non-covalent bonds as well as the different forms of proteins. Despite these capabilities, proteins lack the ability to generate their replica.

Biology: CUET Mock Test - 4 - Question 11

Which of the following enzyme binds to the promoter and initiates the process of transcription?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 11

The RNA polymerase binds to the promoter region of the DNA molecule. After the attachment of the RNA polymerase enzyme to the promoter, the process of transcription is being initiated.

Biology: CUET Mock Test - 4 - Question 12

Which of the following is an adapter molecule?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 12

The tRNA was known by the name sRNA in its early days. sRNA stands for soluble RNA. This was even before the postulation of the genetic code. But, the role of tRNA as an adapter was assigned much later.

Biology: CUET Mock Test - 4 - Question 13

What represents the female part of the flower?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 13

Gynoecium represents the female part of the flower. It consists of a stigma, style and ovaries. The gynoecium is non motile. It’s the pollens that are motile. They fall on the stigma which starts the fertilization process.

Biology: CUET Mock Test - 4 - Question 14

What is a pistil?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 14

Pistil is the free unit of a gynoecium. A pistil has three parts-style, stigma and ovaries. Stigma acts as a landing platform for the pollens. Style is the long tube-like structure that carries the male gamete to the ovaries.

Biology: CUET Mock Test - 4 - Question 15

What happens when the polymerase enzyme reaches the terminator region during transcription?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 15

During the termination stage of transcription process, the nascent RNA falls off. This is observed when the polymerase enzyme reaches the terminator region. Following this, the RNA polymerase enzyme also falls off.

Biology: CUET Mock Test - 4 - Question 16

What does the anticodon loop of the tRNA contain?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 16

The stop codons are UAA, UAG and UGA. These codons are absent in the tRNA molecules. tRNA possesses an amino acid acceptor end which is the site for binding the amino acids. Finally, the anticodon loop of the tRNA contains bases that are complementary to the codes.

Biology: CUET Mock Test - 4 - Question 17

Farther the genes on a chromosome, higher the chances of ______

Detailed Solution for Biology: CUET Mock Test - 4 - Question 17

If the genes are farther away on a chromosome, their linkage decreases. This allows them to recombine more frequently.

Biology: CUET Mock Test - 4 - Question 18

What does the stigma do?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 18

Stigma acts as a landing place for the pollen grains from where the style carries it to the ovaries for the fertilization. Stigma also checks the pollen grain for compatibility or incompatibility.

Biology: CUET Mock Test - 4 - Question 19

Which of the following stage is catalyzed by the RNA polymerase enzyme?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 19

There are three stages in the transcription process. They are initiation, elongation and termination. Among these three, the stage of elongation is catalyzed by the RNA polymerase enzyme.

Biology: CUET Mock Test - 4 - Question 20

Which of the following is the actual structure of the tRNA?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 20

The actual structure of the tRNA is actually a compact molecule which appears to be like an inverted L shaped molecule. But, the secondary structure of the tRNA appears to look like a clover leaf shaped structure.

Biology: CUET Mock Test - 4 - Question 21

Genes that are tightly linked show _____ recombination

Detailed Solution for Biology: CUET Mock Test - 4 - Question 21

Tightly linked genes are located very close to each other. This renders them unable to recombine frequently. Thus, they exhibit low recombination.

Biology: CUET Mock Test - 4 - Question 22

What will happen when the 2 complementary strands of the DNA are heated up and brought together?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 22

From the Griffith’s experiment related to the transforming principle, we could understand that the genetic material still possessed some stability. Likewise, the genetic material DNA which is present in this case also has the capability to join the 2 complementary strands despite it being heated up under appropriate conditions.

Biology: CUET Mock Test - 4 - Question 23

Genes that are loosely linked show ______ recombination.

Detailed Solution for Biology: CUET Mock Test - 4 - Question 23

Loosely linked genes are located very far from each other. That allows recombining frequently. Thus, they exhibit high recombination.

Biology: CUET Mock Test - 4 - Question 24

Which of the following statements is correct regarding DNA and RNA?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 24

DNA is comparatively less reactive than RNA. The 2’-OH group which is present at the nucleotide of the RNA is the reactive group. This makes the RNA highly reactive in comparison to the DNA. RNA is also catalytic and liable. It cannot be easily degraded. Due to these reasons, the conclusion is that that DNA is the better genetic material than the RNA.

Biology: CUET Mock Test - 4 - Question 25

Who was responsible for using the knowledge of recombination frequencies to generate genetic maps?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 25

Alfred was Morgan’s student. He used the methodology of Morgan to obtain recombination frequencies of genes and thus map them on the chromosomes.

Biology: CUET Mock Test - 4 - Question 26

The presence of which base in the place of uracil makes the DNA more stable?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 26

In the case of DNA, thymine is found in the place of uracil. Uracil is found to make a double hydrogen bond with Adenine in RNA. The resistance showed by thymine towards all the photochemical mutations is what makes the DNA more stable.

Biology: CUET Mock Test - 4 - Question 27

HGP stands for _____

Detailed Solution for Biology: CUET Mock Test - 4 - Question 27

HGP is an acronym for Human Genome Project. It was a huge initiative that achieved in successfully obtaining the human genome sequence.

Biology: CUET Mock Test - 4 - Question 28

At what rate does the RNA mutate as compared to DNA?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 28

Mutations can be seen in both DNA and RNA. But RNA mutates at a much faster pace in comparison to the DNA. This is due to the lack of stability that is seen in RNA. Likewise, the viruses which contain RNA as their genetic material also mutate at a faster rate. Their life span will stand short on the contrary.

Biology: CUET Mock Test - 4 - Question 29

Which of the following is responsible for the storage of genetic material?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 29

DNA is a stable genetic molecule in comparison to the RNA. So, the carriage of the genetic information will be carried out by the DNA. The transmission of the genetic material will be done by RNA as it is comparatively less stable.

Biology: CUET Mock Test - 4 - Question 30

Which of the following is responsible for the storage of genetic material?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 30

DNA is a stable genetic molecule in comparison to the RNA. So, the carriage of the genetic information will be carried out by the DNA. The transmission of the genetic material will be done by RNA as it is comparatively less stable.

Biology: CUET Mock Test - 4 - Question 31

Which of the following is responsible for the transmission of genetic information?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 31

The storage of the genetic information takes place in the DNA. It carries all the necessary information needed for heredity. The stability of the DNA is more too, this helps in carrying information. During the central dogma, DNA in transcripted to RNA after which RNA will be responsible for the transmission of the genetic material.

Biology: CUET Mock Test - 4 - Question 32

How many nucleotides are present in the human genome?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 32

Nucleotides are the organic carbon molecules. They contain both a nucleoside and a phosphate group. Inside the human genome, there is a total of 3164.7 million nucleotides.

Biology: CUET Mock Test - 4 - Question 33

In which condition should the ovaries be free?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 33

In apocarpous condition the ovaries must be free, though the other parts maybe fused. Example Oleandar. In simple words, separate carpels.

Biology: CUET Mock Test - 4 - Question 34

______ underwater plant has male and female parts in the same flower.

Detailed Solution for Biology: CUET Mock Test - 4 - Question 34

Ceratophyllum is a fresh water plant (submerged) which bears male and female, both, flowers on the same plant. A male flower has several (30-45) stamens. The mature anthers breaks, and rises upward and dehisce occurs on the surface. The pollen grains are round, with no exine. The pollens come in contact with long and sticky stigmas for pollination.

Biology: CUET Mock Test - 4 - Question 35

What is a placenta?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 35

The ovule bearing parenchymatous tissue is known as the placenta. It is also the part of the ovary where the funiculus attaches itself. Just like in humans, the placenta provides nutrition to the growing ovules.

Biology: CUET Mock Test - 4 - Question 36

Zoster is an example of ______

Detailed Solution for Biology: CUET Mock Test - 4 - Question 36

Zoster is an example of pollination by water. In Zostera, the marine angiosperm (Sea Grass), the pollen grains are long ribbon-like (upto 2500 μm) and without exine.

Biology: CUET Mock Test - 4 - Question 37

Pollination by wind is called ____

Detailed Solution for Biology: CUET Mock Test - 4 - Question 37

Anemophily is pollination by winds. It is a mode of cross pollination or transfer of pollen grains from a mature anther to the stigma of a pistil which is accomplished through the agency of wind, e.g., Coconut Palm, Date Palm, Maize, many grasses, Cannabis.

Biology: CUET Mock Test - 4 - Question 38

In ______ pollination takes place on the surface of the water.

Detailed Solution for Biology: CUET Mock Test - 4 - Question 38

Hydrophylly is of two types— hypohydrophily and epihydrophily. Hypohydrophily occurs below the surface of water, e.g., Zostera, Ceratophyllum. Epihydrophily takes place over the surface of water, e.g., Vallisneria.

Biology: CUET Mock Test - 4 - Question 39

Which of the following is a dioecious, submerged, fresh water plant?

Detailed Solution for Biology: CUET Mock Test - 4 - Question 39

Vallisneria is a dioecious, submerged, fresh water aquatic plant. The male flowers cut off and come to the surface of water. Mature female flowers rise to the surface by elongation of their stalks.

Biology: CUET Mock Test - 4 - Question 40

Pollination by water is called ______

Detailed Solution for Biology: CUET Mock Test - 4 - Question 40

Hydrophily is pollination by water. It is the mode of pollination or transfer of pollen grains from the mature anther of a flower to the stigma of another flower which is accomplished through the agency of water.

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