Class 12  >  CUET Science Subjects Mock Tests  >  Biology: CUET Mock Test - 6 Download as PDF

Biology: CUET Mock Test - 6


Test Description

40 Questions MCQ Test CUET Science Subjects Mock Tests | Biology: CUET Mock Test - 6

Biology: CUET Mock Test - 6 for Class 12 2022 is part of CUET Science Subjects Mock Tests preparation. The Biology: CUET Mock Test - 6 questions and answers have been prepared according to the Class 12 exam syllabus.The Biology: CUET Mock Test - 6 MCQs are made for Class 12 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Biology: CUET Mock Test - 6 below.
Solutions of Biology: CUET Mock Test - 6 questions in English are available as part of our CUET Science Subjects Mock Tests for Class 12 & Biology: CUET Mock Test - 6 solutions in Hindi for CUET Science Subjects Mock Tests course. Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free. Attempt Biology: CUET Mock Test - 6 | 40 questions in 45 minutes | Mock test for Class 12 preparation | Free important questions MCQ to study CUET Science Subjects Mock Tests for Class 12 Exam | Download free PDF with solutions
1 Crore+ students have signed up on EduRev. Have you?
Biology: CUET Mock Test - 6 - Question 1

What is a medium water condition called?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 1

Mesic means an area having a moderate or well-balanced supply of moisture. The hydrarch, as well as xerarch succession finally leads to the formation of a mesic community. It is neither to wet nor too dry.

Biology: CUET Mock Test - 6 - Question 2

What are conditions having too much hydration called?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 2

The habitat having an excess of hydration is known as a hydric habitat. They have wet soils and are characterized by an abundance of moisture. Wetland area is an example of a hydric habitat.

Biology: CUET Mock Test - 6 - Question 3

Who acts as a pioneering species in a xerarch succession?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 3

The first biotic community to invade a bare land or area is known as the pioneer community. In a xerarch succession, lichens in the temperate region act as pioneering species. Some examples of lichens are Rinodina, Lecanora, Parmelia, etc.

Biology: CUET Mock Test - 6 - Question 4

In a xerarch succession, who secrete acids to dissolve rock?

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

The sequence of successional stages occurring on bare rocks is known as xerarch succession. In a xerarch succession, the pioneering species lichens release acids to dissolve rocks. This helps in weathering and soil formation.

Biology: CUET Mock Test - 6 - Question 5

Who replaces the mosses in a xerarch succession?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 5

The sequence of successional stages occurring on bare rocks is known as xerarch succession. The mosses are replaced by the herbaceous plants in a xerarch succession. Some examples of xeric grasses are Aristida, Solidage, Poa, etc.

Biology: CUET Mock Test - 6 - Question 6

Who replaces the shrub stage in a xerarch succession?

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

The sequence of successional stages occurring on bare rocks is known as xerarch succession. The shrub stage is replaced by a forest in a xerarch succession. The trees found in the forest are Acacia, Prosopis, Boswellia, etc.

Biology: CUET Mock Test - 6 - Question 7

Xerarch succession is observed in which of the following area?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 7

The sequence of successional stages occurring on bare rocks is known as xerarch succession. It occurs in an area where there is less amount of moisture. It is mostly observed in the desert area.

Biology: CUET Mock Test - 6 - Question 8

What will happen to biomass in an ecological succession from pioneer to climax community?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 8

Ecological succession is the gradual change in the species composition of a given area which can be predicted. Biomass is the total organic material required for energy production.

Biology: CUET Mock Test - 6 - Question 9

Which of the following is the correct sequence of xerarch succession?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 9

The sequence of successional stages occurring on bare rocks is known as xerarch succession. It mostly starts with the invasion of lichens and ends with the formation of the forest. The pioneering species grow with time leading to a formation of a climax community called a forest.

Biology: CUET Mock Test - 6 - Question 10

In a plant succession, which is the last stabilized community?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 10

The changes in the community are constant, orderly and sequential. These changes lead to the formation of a stable, self-perpetuating and final biotic community that developed during the end of biotic succession known as a climax community.

Biology: CUET Mock Test - 6 - Question 11

What are pioneers?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 11

The first biotic community to invade a bare land or area is known as the pioneer community. These are the organisms of the first seral stage. They further grow and expand to form a climax community.

Biology: CUET Mock Test - 6 - Question 12

Who replaces the herbaceous plants in a xerarch succession?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 12

The sequence of successional stages occurring on bare rocks is known as xerarch succession. The herbaceous plants are replaced by the shrubs in a xerarch succession. Some examples of shrubs are Phytocarpus, Rhus, etc.

Biology: CUET Mock Test - 6 - Question 13

In a xerarch succession, who helps in weathering and soil formation?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 13

The sequence of successional stages occurring on bare rocks is known as xerarch succession. In a xerarch succession, the pioneering species lichens release acids to dissolve rocks. This helps in weathering and soil formation.

Biology: CUET Mock Test - 6 - Question 14

Who replaces the lichens in a xerarch succession?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 14

The sequence of successional stages occurring on bare rocks is known as xerarch succession. The pioneering species lichens are replaced by mosses in a xerosere. Some examples of mosses are Tortula, Grimmima, Polyerichum, etc.

Biology: CUET Mock Test - 6 - Question 15

What is the sequence of successional stages occurring on bare rocks called?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 15

The sequence of successional stages occurring on bare rocks is known as xerarch succession. It is also known as xerosere and starts in a newly formed rocky area.

Biology: CUET Mock Test - 6 - Question 16

What are conditions having too much dryness called?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 16

The habitat having too much dryness is known as a xeric habitat. It is deficient in moisture and is characterized by limited water availability. Desert region is an example of a xeric habitat.

Biology: CUET Mock Test - 6 - Question 17

How many recombinant therapeutics have been approved for humans to date?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 17

Recombinant therapeutics is the type of medicines obtained from recombinant organisms. These are mostly protein in nature. Till date, 30 recombinant therapeutics have been approved for human use which includes insulin, human factor IX, etc.

Biology: CUET Mock Test - 6 - Question 18

From which animals were insulin obtained in the early days?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 18

In early days the insulin was obtained from the pancreas of cattle and pigs. Insulin obtained this way had many disadvantages. Nowadays insulin is obtained using recombinant DNA technology. For this microorganisms are used.

Biology: CUET Mock Test - 6 - Question 19

The polypeptide chains present in insulin is connected by _______ bonds.

Detailed Solution for Biology: CUET Mock Test - 6 - Question 19

The polypeptide chains present in insulin is connected by disulphide bonds. These disulphide bonds are formed between two cysteine residues. In total insulin consists of 3 disulphide bonds.

Biology: CUET Mock Test - 6 - Question 20

 In mammals insulin is secreted as _______

Detailed Solution for Biology: CUET Mock Test - 6 - Question 20

Insulin is a pro-hormone secreted in mammals by the pancreas. This pro-hormone need to be processed to become a fully mature and functional hormone. Insulin allows the absorption of glucose I blood.

Biology: CUET Mock Test - 6 - Question 21

_________ is absent in the mature insulin.

Detailed Solution for Biology: CUET Mock Test - 6 - Question 21

C-peptide is absent in mature insulin. This connecting peptide connects A and B chain in pro-insulin. It is removed during the maturation of pro-insulin to insulin.

Biology: CUET Mock Test - 6 - Question 22

______ organism was used to produce recombinant insulin.

Detailed Solution for Biology: CUET Mock Test - 6 - Question 22

The first recombinant insulin was constructed by using E.coli. It was developed by Lilly Company. E.coli was used because it has a large circular plasmid that can act as a vector, requires less growth time and can be easily grown in a laboratory.

Biology: CUET Mock Test - 6 - Question 23

C-peptide is removed during ______ phase of insulin.

Detailed Solution for Biology: CUET Mock Test - 6 - Question 23

C-peptide is removed during the maturation phase of insulin production. C-peptide consists of 30 amino acids and it joins two insulin polypeptide chains in pro-insulin. It is released as a by-product of insulin formation.

Biology: CUET Mock Test - 6 - Question 24

______ in 1983 used recombinant DNA technology to produce insulin.

Detailed Solution for Biology: CUET Mock Test - 6 - Question 24

In 1983 Lilly Company of America that was founded by Eli Lilly used recombinant DNA technology to produce insulin. This insulin was obtained from a microorganism.

Biology: CUET Mock Test - 6 - Question 25

Insulin in pro-hormone form contains an extra stretch called _______

Detailed Solution for Biology: CUET Mock Test - 6 - Question 25

The pro-hormone form of insulin consists of an extra stretch called C-peptide. The C peptide is a connecting peptide having approximately 31 amino acids. It connects A and B chain of pro-insulin.

Biology: CUET Mock Test - 6 - Question 26

Which organ secretes insulin?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 26

Insulin is secreted by the pancreas. The stomach secretes various digestive enzymes like pepsin and gastric juice. The thyroid secretes thyroid hormones while small intestine secretes trypsin.

Biology: CUET Mock Test - 6 - Question 27

How many polypeptide chains does insulin consist of?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 27

Insulin consists of two polypeptide chains. These are known as A chain and B chain. A chain is made up of 21 amino acids while the B chain is made up of 30 amino acids. Thus, making insulin a polypeptide containing 51 amino acids.

Biology: CUET Mock Test - 6 - Question 28

Out of 30 how many recombinant therapeutics have been marketed in India?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 28

Out of 30 how many recombinant therapeutics 12 have been marketed in India. These products have been approved by the Genetic Engineering Appraisal Committee (GEAC). Few examples of approved products are Human growth hormone, Human insulin, Erythropoietin, etc.

Biology: CUET Mock Test - 6 - Question 29

Plasmids and ________ have the ability to replicate within bacterial cells independent of the control of chromosomal DNA.

Detailed Solution for Biology: CUET Mock Test - 6 - Question 29

Plasmids and bacteriophages can replicate within bacterial cells without the help of chromosomal DNA. Thus they are self-replicating and autonomous in nature. They have their own replication machinery.

Biology: CUET Mock Test - 6 - Question 30

Viruses which infect bacteria are called ______

Detailed Solution for Biology: CUET Mock Test - 6 - Question 30

Bacteriophages or simply phages are the viruses that infect bacteria. They are self-replicating in nature. Archaea is a domain of bacteria. pUC is a vector.

Biology: CUET Mock Test - 6 - Question 31

Selectable markers are the genes which code for resistance to _______

Detailed Solution for Biology: CUET Mock Test - 6 - Question 31

Genes coding for resistance to antibiotics are usually used as selectable markers. They are introduced in an organism especially bacteria along with plasmid. They help in the identification of transformants.

Biology: CUET Mock Test - 6 - Question 32

 ________ is an example of antibiotic.

Detailed Solution for Biology: CUET Mock Test - 6 - Question 32

Antibiotics are the substances that either inhibit the growth or kill bacteria. They are widely used to treat diseases caused by bacteria. Some examples of antibiotics are kanamycin, ampicillin, penicillin, tetracycline, etc.

Biology: CUET Mock Test - 6 - Question 33

What may complicate the process of gene cloning within the cell?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 33

Recognition site is the sequence of DNA where the DNA is cleaved. The presence of more than one recognition site will lead to several cuts within DNA leading to fragmentation of DNA. This will complicate the process of gene cloning.

Biology: CUET Mock Test - 6 - Question 34

Which plasmid of Agrobacterium tumifaciens leads to tumor formation in dicots?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 34

The Ti plasmid in Agrobacterium tumifaciens leads to tumor formation in dicots. ‘Ti’ stands for tumor-inducing. It may contain more than one T-DNA region. This plasmid is modified and used as a cloning vector.

Biology: CUET Mock Test - 6 - Question 35

Which organism can transfer ‘T-DNA’ within plants?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 35

Agrobacterium tumifaciens is the bacteria which transfers ‘T-DNA’ within plants. It mostly infects dicot plants. This ‘T-DNA’ is responsible for the formation of transformed cells called tumors from normal plant cells.

Biology: CUET Mock Test - 6 - Question 36

Insertion of recombinant DNA within the gene encoding for β–galactosidase leads to ________

Detailed Solution for Biology: CUET Mock Test - 6 - Question 36

Insertional inactivation is the process in which the gene is inactivated due to the insertion of other genes within it or within its coding sequence. This leads to loss of function of that specific gene. Thus, insertion of recombinant DNA within the gene encoding for β–galactosidase will lead to insertional inactivation.

Biology: CUET Mock Test - 6 - Question 37

The process by which a foreign DNA is introduced into bacteria is called ______

Detailed Solution for Biology: CUET Mock Test - 6 - Question 37

Transformation is a process in which a foreign DNA is directly picked up by the bacteria from the surrounding environment. It leads to a change in the characteristics of bacteria. It was first observed by Griffith in 1928.

Biology: CUET Mock Test - 6 - Question 38

What helps in identifying the successful transformants?

Detailed Solution for Biology: CUET Mock Test - 6 - Question 38

A selectable marker is a gene that helps in identifying successful transformants. They eliminate the growth of non-transformants and favor the growth of the desired organism. It is one of the features which facilitate cloning in a vector.

Biology: CUET Mock Test - 6 - Question 39

The sequence of DNA from where replication starts is called _______

Detailed Solution for Biology: CUET Mock Test - 6 - Question 39

The sequence of DNA from where the replication starts is called the origin of replication. It is also written as ‘ori’. It is also responsible for controlling the copy number of target DNA. Bacteria usually have only one origin of replication.

Biology: CUET Mock Test - 6 - Question 40

Bioenergy is the energy obtained from ________

Detailed Solution for Biology: CUET Mock Test - 6 - Question 40

Bioenergy is obtained from biomass. Biomass is the organic matter present in living organisms and their wastes. All the biomass has been produced with the help of solar energy reaching the earth.

Use Code STAYHOME200 and get INR 200 additional OFF
Use Coupon Code
Information about Biology: CUET Mock Test - 6 Page
In this test you can find the Exam questions for Biology: CUET Mock Test - 6 solved & explained in the simplest way possible. Besides giving Questions and answers for Biology: CUET Mock Test - 6, EduRev gives you an ample number of Online tests for practice