CUET Exam  >  CUET Tests  >  CUET Mock Test Series  >  Biology: CUET Mock Test - 3 - CUET MCQ

Biology: CUET Mock Test - 3 - CUET MCQ


Test Description

40 Questions MCQ Test CUET Mock Test Series - Biology: CUET Mock Test - 3

Biology: CUET Mock Test - 3 for CUET 2024 is part of CUET Mock Test Series preparation. The Biology: CUET Mock Test - 3 questions and answers have been prepared according to the CUET exam syllabus.The Biology: CUET Mock Test - 3 MCQs are made for CUET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Biology: CUET Mock Test - 3 below.
Solutions of Biology: CUET Mock Test - 3 questions in English are available as part of our CUET Mock Test Series for CUET & Biology: CUET Mock Test - 3 solutions in Hindi for CUET Mock Test Series course. Download more important topics, notes, lectures and mock test series for CUET Exam by signing up for free. Attempt Biology: CUET Mock Test - 3 | 40 questions in 45 minutes | Mock test for CUET preparation | Free important questions MCQ to study CUET Mock Test Series for CUET Exam | Download free PDF with solutions
Biology: CUET Mock Test - 3 - Question 1

The population of vagina with semen during coitus is called as _______

Detailed Solution for Biology: CUET Mock Test - 3 - Question 1

Coitus or copulation is the process that leads to the release of semen from the penis into the vagina. The sperms populate the vagina along with other contents of semen. This process is called insemination.

Biology: CUET Mock Test - 3 - Question 2

Which organ is the first to form in the developing human fetus, formed after just 1 month of pregnancy?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 2

The heart is the first organ to form in the developing fetus. It is formed after one month of pregnancy. The brain takes more time to develop.

1 Crore+ students have signed up on EduRev. Have you? Download the App
Biology: CUET Mock Test - 3 - Question 3

What is the phenotypic ratio of F2 generation in a dihybrid cross?

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

The F2 generation in a dihybrid cross produces all possible phenotypes. The ratio obtained for it is 9:3:3:1.

Biology: CUET Mock Test - 3 - Question 4

In which of the following does syngamy occur inside?

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

Syngamy is the process of fertilization that produces a diploid cell on the fusion of two haploid cells. It is also often called internal fertilization since the process takes place on the inside. However, there are few species of organisms where syngamy occurs outside their bodies, in an external medium. Example, algae, fishes, amphibians, etc. This is also called as external fertilization.

Biology: CUET Mock Test - 3 - Question 5

What is the correct order of travel of sperm through the female reproductive tract before it reaches the egg?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 5

Sperms are released into the vagina. From here, they travel through the cervix and uterus before reaching oviduct or fallopian tube, where they can encounter an egg.

Biology: CUET Mock Test - 3 - Question 6

External genital organs are developed during ______

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

Limbs and digits, along with external genitalia, are formed during the first trimester. This is a period of 12 weeks after pregnancy.

Biology: CUET Mock Test - 3 - Question 7

In Mendel’s experiments on garden pea plants, he performed a dihybrid cross of round yellow and green wrinkled seed plants. In the F2 generation, he sampled 1600 plants. Which of the following represents the correct number of plants of each phenotype?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 7

The F2 progeny of a dihybrid Mendelian cross has a phenotypic ratio of 9:3:3:1. Thus of the 1600 plants sampled, 900 will be round yellow, 300 round green, 300 wrinkled yellow and 100 wrinkled green.

Biology: CUET Mock Test - 3 - Question 8

What is the pair of homologous chromosomes that line together during the meiosis I called?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 8

The pair of chromosomes that line up during meiosis has two copies of each homologous chromosome. Hence it is called a bivalent.

Biology: CUET Mock Test - 3 - Question 9

What is androecium?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 9

Androecium is a collection of stamens. Stamens consists of anthers and filaments. Anthers are fused to the top of the filament that acts like a stalk. Pollen sacs are present on the anthers, within which are the pollen grains.

Biology: CUET Mock Test - 3 - Question 10

Fetal movements can be observed during ________

Detailed Solution for Biology: CUET Mock Test - 3 - Question 10

Trimesters are periods of three months’ post-pregnancy. Fetal movements can be observed starting five months’ post-pregnancy i.e., during the second trimester.

Biology: CUET Mock Test - 3 - Question 11

Which law was proposed by Mendel based on his dihybrid cross studies?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 11

The first two laws of Mendel were based on his studies on monohybrid crosses. These were the law of dominance and the law of segregation. The dihybrid cross studies supported them, but also led to the formulation of a third law: the law of independent assortment.

Biology: CUET Mock Test - 3 - Question 12

Who interpreted by observing the independent segregation of chromosomes during meiosis, that the factors they carry would also separate independently?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 12

Sutton and Boveri had studied the segregation of chromosomes very closely by staining the cells and then developing a differential staining approach to visualize the pairs of chromosomes. To their surprise, this was very similar to the expectation of Mendel’s factors. Hence they made the conclusion that independent separation of chromosomes should lead to independent segregation of factors.

Biology: CUET Mock Test - 3 - Question 13

What part of the oviduct does the sperm encounter the egg?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 13

The egg is released and awaits in ampulla for the sperm. The sperms cross the reproductive tract barriers before reaching the ampulla to fertilize the egg.

Biology: CUET Mock Test - 3 - Question 14

Which of these is not an associated function of the increased maternal hormones estrogen, progesterone, prolactin, and cortisol?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 14

The maternal increase in the hormones is responsible for the development and growth of the fetus, maintenance of pregnancy, and the changes in metabolism in mother essential for the proper nourishment of fetus. Lactation is not a part of pregnancy. It occurs after the baby has been delivered.

Biology: CUET Mock Test - 3 - Question 15

What law talks about the segregation of two or more traits independent of one another?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 15

The Law of Independent Assortment states the independent segregation of traits that are unrelated. Mendel drew this conclusion based on his studies on garden pea plants.

Biology: CUET Mock Test - 3 - Question 16

What theory was coined by Sutton and Boveri?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 16

Sutton and Boveri were the key players in the world of biology during the decade of 1900-1910. They observed chromosome movements and studied Mendel’s experiments. Based on these, they devised the chromosomal theory of inheritance.

Biology: CUET Mock Test - 3 - Question 17

During a menstrual cycle, copulation on which of the following phases has the least probability of fertilizing an egg?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 17

Fertilization occurs only when the egg and sperm are present in the ampulla at the same time. Hence the coitus should happen near the period of ovulation. Ovulation occurs at the end of the follicular phase or the onset of luteal phase.

Biology: CUET Mock Test - 3 - Question 18

Implantation is followed by the differentiation of inner cell mass into outer _______ and inner ______

Detailed Solution for Biology: CUET Mock Test - 3 - Question 18

The process of implantation is followed by the rapid differentiation of the inner mass of cells of the blastocyst. These cells differentiate into the outer layer of ectoderm and the inner layer of endoderm. Mesoderm arises later.

Biology: CUET Mock Test - 3 - Question 19

Which of the following is a correct interpretation of the law of independent assortment?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 19

The law of independent assortment was the third law of Mendel. It states that when multiple traits are under consideration, each trait segregates independently of the other.

Biology: CUET Mock Test - 3 - Question 20

Who was responsible for the theory of chromosomal inheritance?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 20

Sutton and Boveri were inspired by Mendel’s studies. With the advent of microscopy, they could observe the chromosomal movements during meiosis. Both of these led them to devise the chromosomal theory of inheritance.

Biology: CUET Mock Test - 3 - Question 21

What is fertilization?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 21

Ovulation is the release of egg from the ovary. Spermiation is the release of sperm from testis. Insemination is the release of semen into vagina. Fertilization is the process that leads to fusion of male and female gametes.

Biology: CUET Mock Test - 3 - Question 22

What layer separates ectoderm from the endoderm in the developing fetus?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 22

Ectoderm and endoderm are the first layers that arise as a result of the differentiation of the implanted blastocyst. Eventually, a third layer separating ectoderm from the endoderm arises. This layer is called mesoderm.

Biology: CUET Mock Test - 3 - Question 23

If x is the phenotypic ratio of monohybrid cross for trait A and y is the phenotypic ratio of monohybrid cross for trait B, what would be the phenotypic ratio of a dihybrid cross involving traits A and B?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 23

For a dihybrid cross involving two traits, the independent law of assortment states that the traits would segregate independently of each other. Thus, the phenotypic ratio would be xy.

Biology: CUET Mock Test - 3 - Question 24

Which theory states that the segregation of one chromosomal pair during meiosis is independent of the other chromosomal pairs?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 24

The chromosomal theory of inheritance was stated by Sutton and Boveri. It talks about the movement of chromosomal pairs independent of each other to reach the metaphase plate during Meiosis I.

Biology: CUET Mock Test - 3 - Question 25

What layer of egg cell prevents entry of other sperms?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 25

The sperm contacts the egg cell at zona pellucida. The zona pellucida then undergoes chemical changes which renders egg insusceptible to further encounters with another sperm. This is essential to ensure that only a single sperm fertilizes the egg.

Biology: CUET Mock Test - 3 - Question 26

The ability of a cell to differentiate is called ______

Detailed Solution for Biology: CUET Mock Test - 3 - Question 26

Development is the process that leads to the formation of an organism from the zygote. Potency is the ability of a cell to differentiate into another cell type. Stemness is the potential of a cell to divide indefinitely and also differentiate to multiple different cell types.

Biology: CUET Mock Test - 3 - Question 27

What does the blue part stand for?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 27

The whole image is a stamen. The blue part depicts the anther that carries the male gametes and the red part is the filament. The anther is fused with the filament.

Biology: CUET Mock Test - 3 - Question 28

What does the chromosomal theory of inheritance state?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 28

The chromosomal theory of inheritance was devised by the observations of the movements of chromosomes during the process of meiosis. According to this theory and the experiments that validate it, the chromosomes segregate independently of each other.

Biology: CUET Mock Test - 3 - Question 29

What triggers the completion of meiosis of secondary oocyte?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 29

The secondary oocyte released from the ovary has finished first round of meiosis. The second round of meiosis occurs in ampulla after the egg encounters the sperm. This leads to formation of large ovum and a tiny second polar body.

Biology: CUET Mock Test - 3 - Question 30

The cells within the inner cell mass that possess the ability to give rise to the entire organism are called _______

Detailed Solution for Biology: CUET Mock Test - 3 - Question 30

The stem cells are a population of cells within the inner cell mass that possess the ability to give rise to an entire organism. They have a property called stemness, which gives them this ability.

Biology: CUET Mock Test - 3 - Question 31

Which of the following are the correct gametes produced by TtYy?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 31

TtYy is a dihybrid heterozygote. The independent law of assortment applies to it. Thus, it will produce four types of gametes. These will be TY, Ty, tY, and ty.

Biology: CUET Mock Test - 3 - Question 32

Who was the pioneer of studies in fruit flies?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 32

Morgan, along with his students and colleagues, led to the setting up of fruit flies as the model organism. Today fruit fly is used widely for many studies.

Biology: CUET Mock Test - 3 - Question 33

The haploid ovum is also called as ________

Detailed Solution for Biology: CUET Mock Test - 3 - Question 33

The haploid ovum is formed after the second round of meiosis is completed. This haploid ovum is also called as ootid. Oogonium is the egg mother cell that is diploid and undergoes meiosis to form egg.

Biology: CUET Mock Test - 3 - Question 34

Heart is derived from ______

Detailed Solution for Biology: CUET Mock Test - 3 - Question 34

Heart is the first organ to develop in the fetus. It is derived from the mesodermal cells. After gastrulation, this differentiates into mesothelium, endothelium, and myocardium.

Biology: CUET Mock Test - 3 - Question 35

In Malvaceae anthers are _______

Detailed Solution for Biology: CUET Mock Test - 3 - Question 35

Anthers may contain 1 or 2 lobes. Anthers with one lobe are known as monothecous and anthers with 2 lobes are known as dithecous. In Malvaceae and Euphorbiaceae, the anthers are monothecous.

Biology: CUET Mock Test - 3 - Question 36

What is the scientific name of fruit fly?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 36

Drosophila is the genus of fruit fly. There are many species found in this genus. Drosophila melanogaster has been widely accepted as the model organism.

Biology: CUET Mock Test - 3 - Question 37

The fusion of haploid sperm and egg nuclei during fertilization leads to formation of a _______

Detailed Solution for Biology: CUET Mock Test - 3 - Question 37

The fusion of sperm and egg restores the chromosome number. The new cell is called zygote having the potential to develop into a new organism.

Biology: CUET Mock Test - 3 - Question 38

For a poly hybrid cross concerning N trait, what is the number of squares required in the Punnett square to check for the F2 generation?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 38

For a poly hybrid cross involving N traits, according to the law of independent assortment, 2N types of gametes will be produced by each parent. Therefore, the cross of these progeny will give (2N)*(2N) = 2(2N).

Biology: CUET Mock Test - 3 - Question 39

Thomas Morgan is known for his studies on ______

Detailed Solution for Biology: CUET Mock Test - 3 - Question 39

Thomas Hunt Morgan, along with his colleagues, led to the establishment of fruit flies Drosophila melanogaster as the model organism. It has been used for many studies that have potential applications to human society.

Biology: CUET Mock Test - 3 - Question 40

Which model organism was used to verify the chromosomal theory of inheritance?

Detailed Solution for Biology: CUET Mock Test - 3 - Question 40

Drosophila melanogaster was used to verify the chromosomal theory of inheritance. This was done by Thomas Hunt Morgan and his colleagues. The reason for this model organism owes to its polytene chromosomes.

8 docs|148 tests
Information about Biology: CUET Mock Test - 3 Page
In this test you can find the Exam questions for Biology: CUET Mock Test - 3 solved & explained in the simplest way possible. Besides giving Questions and answers for Biology: CUET Mock Test - 3, EduRev gives you an ample number of Online tests for practice

Up next

Download as PDF

Up next