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Biology: CUET Mock Test - 1 - CUET MCQ


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40 Questions MCQ Test CUET Mock Test Series - Biology: CUET Mock Test - 1

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

What is the term used to describe genetic and morphologic similarities between different individuals?

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

Clones are organisms with the same genetic and morphological similarities. It can be carried out naturally and artificially. Asexual reproduction is an example of natural cloning. Artificial cloning is carried out in labs. In biotechnology cloning can refer to DNA fragments or cell copies.

Biology: CUET Mock Test - 1 - Question 2

What is sexual reproduction?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 2

The fusion of a haploid male (23 chromosomes) and a haploid female gamete (23 chromosomes) produces a diploid (46 chromosomes) egg or a zygote. This process of reproduction is known as sexual reproduction.

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Biology: CUET Mock Test - 1 - Question 3

What are the 2 main pre fertilization events?

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

Gametogenesis refers to the formation of the gametes. In sexual reproduction formation of gametes is very important since an offspring is formed only after the fusion of the gametes. Gamete transfer refers to bringing the 2 gametes together.

Biology: CUET Mock Test - 1 - Question 4

What is the event after zygote formation called?

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

Sexual reproduction is divided into 3 events. Pre-fertilization, fertilization and post-fertilization events. Pre fertilization is the events occurring before fusion of gametes (gametogenesis), fertilization is the fusion of gametes to form zygote and post-fertilization are the events occurring after zygote formation.

Biology: CUET Mock Test - 1 - Question 5

What are non-motile fungal spores also known as?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 5

Conidia are non-motile fungal spores that are produced singly or in chains by constriction of tips of conidiophores and are dispersed by wind. Zoospores are motile fungal spores. Gemmules are reproductive structures of sponges and nodes are just a site on the stem from where the new plant arises in rhizomes (vegetative propagation).

Biology: CUET Mock Test - 1 - Question 6

What is phase when the organism is old enough to reproduce known as?

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

The phase when it is growing is known as the juvenile phase or the vegetative phase (in plants). The phase after that when the reproductive organs in the organism matures is known as the reproductive phase. Senescence is the phase when the plant starts deteriorating as it grows old and finally dies.

Biology: CUET Mock Test - 1 - Question 7

Which plant is the “terror of Bengal”?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 7

Water hyacinth

The water hyacinth, also known as Eichhornia crassipes, is referred to as the "terror of Bengal" because it is an invasive aquatic plant that has caused significant environmental and economic problems in Bengal and other regions. The plant grows and reproduces rapidly, covering the surface of water bodies, which negatively impacts native species, blocks sunlight and oxygen, and impedes water transportation. Efforts to control and remove water hyacinth have proven challenging and costly.

Biology: CUET Mock Test - 1 - Question 8

Zygote divides by ______ to form haploid spores.

Detailed Solution for Biology: CUET Mock Test - 1 - Question 8

Organisms having haplontic lifecycles, zygote divides by meiosis to form haploid spores that grow into haploid individuals. Formation of zygote forms the vital link, ensuring continuity of the species.

Biology: CUET Mock Test - 1 - Question 9

In which plant species is it difficult to define the different phases (juvenile, reproductive phase)?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 9

It is difficult to clearly distinguish between the different phases in perennial plants. Some plants exhibit unusual flowering phenomena. Some plants flower every year, there are some that flower every 10 years and some plants flower every 50 years. Neelakurinji is a flowering plant that flowers every 12 years.

Biology: CUET Mock Test - 1 - Question 10

The male gamete is called as ________

Detailed Solution for Biology: CUET Mock Test - 1 - Question 10

Male gamete is called antherozoid or sperm. They are called so in heterogametes. The two gametes produced are morphologically distinct types. The female gamete is called egg or ovum.

Biology: CUET Mock Test - 1 - Question 11

What is development of embryo called?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 11

Embryogenesis is the process of embryo formation from a zygote. It undergoes mitosis and cell differentiation in this process. Cell differentiation helps in categorizing cells into specialized tissues.

Biology: CUET Mock Test - 1 - Question 12

Which type of plants flower only once?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 12

Monocarpic plants flower only once in its lifetime. They die after flowering. Annuals like marigold, wheat, paddy, biennials like radish, perennials like Bambusa tulda which flowers every 50-100 years, fruits and dies.

Biology: CUET Mock Test - 1 - Question 13

What are the male organs in a flowering plant called?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 13

Stamens are the male organs of a flower. Flowers maybe unisexual (either staminate or pistillate). In staminate plants only the male part, that is the stamen, is present and in the pistillate plants only the female part is present (ovaries). In bisexual plants, both are present.

Biology: CUET Mock Test - 1 - Question 14

What are animals in which zygote development happens outside the body called?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 14

Animals are categorized into 2 types of–oviparous and viviparous. Oviparous animals are those animals in which zygote development takes place outside the body. Reptiles and birds are examples of oviparous animals.

Biology: CUET Mock Test - 1 - Question 15

Which of the following is a vegetative propagation by sub aerial stems?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 15

In suckers the lateral branches arise from basal and underground portions of the main stem. They grow horizontally underground and the leafy shots arise from the soil. For example, bananas.

Biology: CUET Mock Test - 1 - Question 16

Which type of plant flowers repeatedly?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 16

 Polycarpic plants are those that flower repeatedly, which means they do not die after flowering once. Examples are perennials like apple, mango and perennial flowers like china rose, it flowers throughout the year.

Biology: CUET Mock Test - 1 - Question 17

Cucurbits and coconuts are examples of _______

Detailed Solution for Biology: CUET Mock Test - 1 - Question 17

A plant having both reproductive organs in the same plant is known as monoecious plants. It may also be known as homothallic conditions. Dioecious plants are those which have only one reproductive organ, also known as unisexual plants. Another word for dioecious plants is heterothallic.

Biology: CUET Mock Test - 1 - Question 18

What are animals in which zygote formation takes place in the body called?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 18

Animals are categorized into 2 types of–oviparous and viviparous. Viviparous animals are those animals in which zygote development takes place within the body itself. Mammals are a very good example for viviparous reproduction.

Biology: CUET Mock Test - 1 - Question 19

Which of the following is an example of a bulb?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 19

Tulip is an example of a bulb. It is a vegetative propagation by underground stems. They have more than one terminal buds. Another very common example is the onion. Oxalis is and example of a runner and the other 2 are examples of vegetative propagation by leaves.

Biology: CUET Mock Test - 1 - Question 20

What are the 3 phases in a life cycle (in order)?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 20

There are 3 phases in a life cycle.
(i) Juvenile phase/ vegetative phase: period from birth to maturation of reproductive systems.
(ii) Reproductive phase: period when the reproductive systems have matured and ready to produce offspring.
(iii) Senescence: period when the organism starts growing old and starts degrading.

Biology: CUET Mock Test - 1 - Question 21

Which of the following is an example of a unisexual organism?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 21

Cockroach is an example of a unisexual organism, which means it can produce only one type of gamete, either male or female. Leech, tapeworm and earthworm are bisexual organisms, organisms that can produce both gametes.

Biology: CUET Mock Test - 1 - Question 22

What is the period of growth known as in plants?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 22

The general term for the period of growth is known as juvenile phase. In plants it is known as the vegetative phase. The end of juvenile phase marks the beginning of reproductive phase.

Biology: CUET Mock Test - 1 - Question 23

Which of the following is not an example of sub aerial vegetative propagation?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 23

Bulbils, also called vegetative propagation by flower buds is not an example of sub aerial vegetative propagation. It produces multicellular fleshy buds that give rise to new plants. Example, Agave.

Biology: CUET Mock Test - 1 - Question 24

Name the sequence in which sexual reproduction is divided into?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 24

Sexual reproduction is the fusion of the male and the female gamete that forms a single celled zygote, the process is known as fertilization. This process has been divided into 3 events. The pre-fertilization, fertilization and post-fertilization events.

Biology: CUET Mock Test - 1 - Question 25

Gametes in all ____ species are of 2 types.

Detailed Solution for Biology: CUET Mock Test - 1 - Question 25

 All heterogametic species can produce 2 types of gametes, male and female, their sex chromosomes are unidentical. Homogametic species the sex chromosomes are identical.

Biology: CUET Mock Test - 1 - Question 26

Chances of survival are more for ______ animals.

Detailed Solution for Biology: CUET Mock Test - 1 - Question 26

Since zygote development takes place inside the female body, they are in a protected environment. Unlike the oviparous animals, which are vulnerable. The chances of oviparous animals to survive is low.

Biology: CUET Mock Test - 1 - Question 27

How does a starfish reproduce?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 27

Starfish reproduces by binary fission. Just like the single celled organisms, starfish breaks along the central axis. The 2 separate halves then lead an independent life by forming or regenerating the limbs and missing parts.

Biology: CUET Mock Test - 1 - Question 28

Which factor is responsible for the changes in the 3 phases in a life cycle?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 28

Hormones are chemical messengers that travel through the bloodstream (in case of animals). Hormones are responsible for the change in the phases in both plants and animals. Hormonal change can be affected by environmental factors too.

Biology: CUET Mock Test - 1 - Question 29

What are the cells in diploid organisms that undergo meiosis called?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 29

Meiocytes are cells in diploid organisms that undergo meiosis. Meiosis is the process of producing 4 haploid cells from a single cell that has been divided twice. The haploid cell then becomes diploid after its fusion with the other sex gamete.

Biology: CUET Mock Test - 1 - Question 30

In flowering plants, where is the zygote formed?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 30

In flowering plants, the zygote is formed in the ovule. The pollen tube is a mode of transportation for the pollens that lay on the stigma, to the ovaries. Anther consists of pollen grains (male gamete).

Biology: CUET Mock Test - 1 - Question 31

How are male honey bees born?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 31

Parthenogenesis is a process of reproduction where the ovum is unfertilized. In case of bees the eggs are haploid which subsequently makes the male bee haploid. It is a type of asexual reproduction. This type of reproduction takes place in lower plants like aphids.

Biology: CUET Mock Test - 1 - Question 32

What process does the image show?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 32

Fertilization is the process of fusion of the male and female gamete to form an egg or a zygote. It is a type of sexual reproduction. Formation of a diploid cell from 2 haploid cells.

Biology: CUET Mock Test - 1 - Question 33

Which structure in the plant carries the male organ?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 33

The pollen grains carry the male organ. Mostly the male organs are the motile gamete while the female organ is stationary. It is necessary for the male organs to be small and light for easy propagation by the environmental agents.

Biology: CUET Mock Test - 1 - Question 34

What does the zygote develop into?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 34

Zygote develops into an embryo. It happens through a series of cell division and cell differentiation. In case of flowering plants, the zygote develops into an embryo and the ovule develops into a seed.

Biology: CUET Mock Test - 1 - Question 35

Which of the following is a vegetative propagation by sub aerial stems?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 35

In suckers the lateral branches arise from basal and underground portions of the main stem. They grow horizontally underground and the leafy shots arise from the soil. For example, bananas.

Biology: CUET Mock Test - 1 - Question 36

What are non-motile fungal spores also known as?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 36

Conidia are non-motile fungal spores that are produced singly or in chains by constriction of tips of conidiophores and are dispersed by wind. Zoospores are motile fungal spores. Gemmules are reproductive structures of sponges and nodes are just a site on the stem from where the new plant arises in rhizomes (vegetative propagation).

Biology: CUET Mock Test - 1 - Question 37

What is the thick wall developed on a fruit called?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 37

Ovaries develop into fruits which further develop a thick wall covering called the pericarp. The major function of the pericarp is protection. After fertilization all flower parts wither and fall off.

Biology: CUET Mock Test - 1 - Question 38

Most common abiotic pollinator is ___

Detailed Solution for Biology: CUET Mock Test - 1 - Question 38

Plants pollinated by wind produce a large (maybe billions) amount of pollen grains into the air so that they hit the target on other plants. Many crop plants like wheat are wind pollinated.

Biology: CUET Mock Test - 1 - Question 39

Pollination by ____ is rare.

Detailed Solution for Biology: CUET Mock Test - 1 - Question 39

In plants pollinated by the wind, flowers are small and inconspicuous. The pollen grains are made light weight and unwettable due to the presence of a mucilage covering. The water current acts as a pollen vector

Biology: CUET Mock Test - 1 - Question 40

How does Bryophyllum reproduce?

Detailed Solution for Biology: CUET Mock Test - 1 - Question 40

Adventitious buds arise from the margin of the leaves in Bryophyllum. Those buds give rise to new plants that fall of when they are capable enough to grow on their own. This unique ability has been exploited by the gardeners and farmers.

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