NEET Exam  >  NEET Tests  >  Biology Class 11  >  Test: Cell Cycle & Cell Division - 2 - NEET MCQ

Test: Cell Cycle & Cell Division - 2 - NEET MCQ


Test Description

25 Questions MCQ Test Biology Class 11 - Test: Cell Cycle & Cell Division - 2

Test: Cell Cycle & Cell Division - 2 for NEET 2024 is part of Biology Class 11 preparation. The Test: Cell Cycle & Cell Division - 2 questions and answers have been prepared according to the NEET exam syllabus.The Test: Cell Cycle & Cell Division - 2 MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Cell Cycle & Cell Division - 2 below.
Solutions of Test: Cell Cycle & Cell Division - 2 questions in English are available as part of our Biology Class 11 for NEET & Test: Cell Cycle & Cell Division - 2 solutions in Hindi for Biology Class 11 course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Test: Cell Cycle & Cell Division - 2 | 25 questions in 25 minutes | Mock test for NEET preparation | Free important questions MCQ to study Biology Class 11 for NEET Exam | Download free PDF with solutions
Test: Cell Cycle & Cell Division - 2 - Question 1

How many chromosomes are present in the each cell of the onion root tip?

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 1

The root tip cells of onion were used to test the potentially genotoxic effects of Alprazolam. The test was carried out according to Fiskesjö protocol (4, 11-12) with some modifications. Common onion (Allium cepa L.) has eight pairs of relatively large chromosomes (2n = 16) that allows for the easy detection of CAs.

Test: Cell Cycle & Cell Division - 2 - Question 2

Which of these processes ensure the haploid phase of life cycle?

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 2
  • The haploid phase of life cycle occurs when the total chromosome number inside the cell is reduced to half.
  • It occurs by the process of meiosis.
  • Fertilization restores the diploid phase of life cycle.
1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: Cell Cycle & Cell Division - 2 - Question 3

Astral body are formed of

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 3

Astral body are formed of microtubules. Astral bodies are produced by centriole during cell division and attach with centromere of the chromosome.

Test: Cell Cycle & Cell Division - 2 - Question 4

The small disc shaped like structures occur in the centromere are called as

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 4

Small disc-shaped structures at the surface of the centromeres are called kinetochores. These structures serve as the sites of attachment of spindle fibres (formed by the spindle fibres) to the chromosomes.

Test: Cell Cycle & Cell Division - 2 - Question 5

Human ------------- do not divide in brain after birth.

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 5

Human nerve cells do not divide after birth. The neural system is the control system of the body which consists of highly specialized cells called neurons. Nerve cell does not divide because they do not have centrioles, so they cannot undergo mitosis and divide to form new cells.

Test: Cell Cycle & Cell Division - 2 - Question 6

In animal cells, during G2 phase

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 6

During the G2 phase, proteins are synthesised in preparation for mitosis while cell growth continues.

Test: Cell Cycle & Cell Division - 2 - Question 7

Division of nucleus without being followed by cytokinesis results into

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 7

If cytokinesis doesn't take place after karyokinesis, formation of daughter cells from the parent cell doesn't take place. The parent cell will have more than one nucleus, which are supposed to be present in daughter cells.

If it's a plant cell, cell plate formation doesn't take place.

If it's an animal cell, a furrow doesn't appear.

Cytokinesis means division of cytoplasm. So, the cytoplasmic division doesn't take place after the division of nucleus(karyokinesis).

Hence, the correct answer is Option D.

Test: Cell Cycle & Cell Division - 2 - Question 8

Plant mitosis is generally controlled by

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 8

In plant cell, mitosis cell division is generally controlled by cytokinin hormone. Auxinis also required for cell division in plant.

Test: Cell Cycle & Cell Division - 2 - Question 9

Arrange the order of events taking place in anaphase II stage of meiosis:
a. Metaphase plate spilts
b. Each chromosome moves away from equatorial plane
c. Centromeres split and chromatids separate.
d. Chromatids move to opposite poles

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 9

Solution : 

The correct option is Option B,

c, a, d, b

During the anaphase II stage of meiosis, the following events take place in the following order:

  1. Centromeres split and chromatids separate: During anaphase II, the centromere of each chromosome splits, and the two chromatids that were previously joined at the centromere move to opposite poles of the cell. This is the first event that occurs during anaphase II.

  2. Metaphase plate splits: During anaphase II, the metaphase plate, which is the line along which the chromosomes are aligned during metaphase, splits into two halves. This is the second event that occurs during anaphase II.

  3. Chromatids move to opposite poles: As the metaphase plate splits, the chromatids that were previously aligned along it move towards the poles of the cell. This is the third event that occurs during anaphase II.

  4. Each chromosome moves away from the equatorial plane: As the chromatids move towards the poles, the chromosomes they make up also move away from the equatorial plane of the cell. This is the final event that occurs during anaphase II.

Therefore, the correct order of events is c, a, d, b.

 

Test: Cell Cycle & Cell Division - 2 - Question 10

In diploid cells,each homologous chromosome consists of

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 10

In Diploid cells, each homologous chromosome consists of one paternal and one maternal chromosomethat fuse together during fertilization of gametes.

Test: Cell Cycle & Cell Division - 2 - Question 11

The resting phase is otherwise called as

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 11

The interphase, though called the resting phase, is the time during which the cell is preparing for divisionby undergoing both cell growth and DNA replication in an orderly manner.

Test: Cell Cycle & Cell Division - 2 - Question 12

Which of the following phases in mitosis is in correct order?

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 12

Mitosis is also divided into four stages namely prophase, metaphase, anaphase and telophase.

Test: Cell Cycle & Cell Division - 2 - Question 13

During mitosis ER and nucleolus begin to disappear at

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 13

During mitosis, Endoplasmic Reticulum (ER) and nucleolus begin to disappear at early prophase and these are not observed in late prophase. 

Test: Cell Cycle & Cell Division - 2 - Question 14

Which one is not a significance of meiosis division?

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 14

Meiosis cell division results into number of chromosome reduce to half, recombination of genes and formation of spores and gametes.

Test: Cell Cycle & Cell Division - 2 - Question 15

Polyploidy is the property of

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 15

Polyploidy is the condition in which more than one set of chromosome is present in one cell. It is the property of increasing the number of chromosomes sets of the cell.

Test: Cell Cycle & Cell Division - 2 - Question 16

In animal cells, the mitotic division is seen in

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 16

Option 3: Diploid somatic cells.

During mitotic division, also known as cell division, the genetic material in a cell's nucleus is replicated and then the cell divides into two daughter cells. In animal cells, this process occurs in diploid somatic cells, which are cells that contain two copies of each chromosome (one from each parent). Haploid cells, on the other hand, only contain one copy of each chromosome. Haploid cells can be either germ cells, which are cells that give rise to gametes (sperm or eggs), or they can be cells that have undergone meiosis, a type of cell division that reduces the chromosome number by half.

Test: Cell Cycle & Cell Division - 2 - Question 17

In the metaphase stage, the chromosomes are made up of

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 17

At metaphase stage, the chromosome is made up of two sister chromatids, which are held together by the centromere.

Test: Cell Cycle & Cell Division - 2 - Question 18

In animal cells, Cytokinesis takes place by furrow deepening centripetally and formation of two daughter cells. This method is known as

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 18

In animal cell, cytokinesis takes place by furrow deepening centripetally and formation of two daughter cells. This method of cytokinesis is known as cleavage cytokinesis.

Test: Cell Cycle & Cell Division - 2 - Question 19

In telophase I, which of the following event takes place?

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 19

In telophase I, the nuclear membrane and nucleolus reappear.Meiosis II is similar to mitosis.

Test: Cell Cycle & Cell Division - 2 - Question 20

Lampbrush chromosome where two homologous chromosome with several chiasmata with several loops in chromatic region is found in

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 20

Egg yolk contains lampbrush chromosome where two homologous chromosomes with several chiasmata with several loop in chromatic region is found.

Test: Cell Cycle & Cell Division - 2 - Question 21

In which stage, the cells remain metabolically active but do not proliferate?

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 21

The quiescent stage (G0) of the cell cycle. Cells in this stage remainmetabolically active but no longer proliferate unless called on to do so.

Test: Cell Cycle & Cell Division - 2 - Question 22

The nuclear structures disappear during

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 22

During prophase, the chromosomes condense, the nucleolus disappears, and the nuclear envelope breaks down.

Test: Cell Cycle & Cell Division - 2 - Question 23

An alkaloid widely used in plant breeding for doubling the chromosome number also known as ‘mitotic poison’ is

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 23

Colchicine is an alkaloid used in plant breeding for doubling of chromosomeby inhibiting cytokinesis. It is also called as mitotic poison.

Test: Cell Cycle & Cell Division - 2 - Question 24

Synapsis occurs between

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 24

Synapsis occur between two homologous chromosome during zygotene phase of prophase of meiosis I due to presence of synaptical complex between homologous chromosomes.

Test: Cell Cycle & Cell Division - 2 - Question 25

Spindle fibres attach on to 

Detailed Solution for Test: Cell Cycle & Cell Division - 2 - Question 25

Spindle fibres attach to kinetochores of chromosomes during cell division. They help the chromosomes/chromatids to get separated to the two daughter cells, towards opposite poles.

182 videos|383 docs|189 tests
Information about Test: Cell Cycle & Cell Division - 2 Page
In this test you can find the Exam questions for Test: Cell Cycle & Cell Division - 2 solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Cell Cycle & Cell Division - 2, EduRev gives you an ample number of Online tests for practice

Top Courses for NEET

182 videos|383 docs|189 tests
Download as PDF

Top Courses for NEET