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Test: Post-Fertlisation Events (Old NCERT) - NEET MCQ


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10 Questions MCQ Test Biology Class 12 - Test: Post-Fertlisation Events (Old NCERT)

Test: Post-Fertlisation Events (Old NCERT) for NEET 2024 is part of Biology Class 12 preparation. The Test: Post-Fertlisation Events (Old NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: Post-Fertlisation Events (Old NCERT) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Post-Fertlisation Events (Old NCERT) below.
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Test: Post-Fertlisation Events (Old NCERT) - Question 1

What is the thick wall developed on a fruit called?

Detailed Solution for Test: Post-Fertlisation Events (Old NCERT) - Question 1

varies 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.

Test: Post-Fertlisation Events (Old NCERT) - Question 2

What does the zygote develop into?

Detailed Solution for Test: Post-Fertlisation Events (Old NCERT) - Question 2

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.

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Test: Post-Fertlisation Events (Old NCERT) - Question 3

In flowering plants, where is the zygote formed?

Detailed Solution for Test: Post-Fertlisation Events (Old NCERT) - Question 3

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).

Test: Post-Fertlisation Events (Old NCERT) - Question 4

The chances of survival of the young one is greater in ______ animals

Detailed Solution for Test: Post-Fertlisation Events (Old NCERT) - Question 4

In viviparous animals, well developed young ones are born from the female organism at the end of a gestation period. In this scenario, there is no fear of predator and the environmental elements as in case of oviparous animals, that lay eggs and young hatch from it.
Viviparous mode of development is not affected by adverse environmental conditions. Therefore the chances of survival of the young one is greater in viviparous animals.

Test: Post-Fertlisation Events (Old NCERT) - Question 5

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

Detailed Solution for Test: Post-Fertlisation Events (Old NCERT) - Question 5

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.

Test: Post-Fertlisation Events (Old NCERT) - Question 6

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

Detailed Solution for Test: Post-Fertlisation Events (Old NCERT) - Question 6

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.

Test: Post-Fertlisation Events (Old NCERT) - Question 7

What is development of embryo called?

Detailed Solution for Test: Post-Fertlisation Events (Old NCERT) - Question 7

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.

Test: Post-Fertlisation Events (Old NCERT) - Question 8

Zygote divides by ______ to form haploid spores.

Detailed Solution for Test: Post-Fertlisation Events (Old NCERT) - 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.

Test: Post-Fertlisation Events (Old NCERT) - Question 9

What is the event after zygote formation called?

Detailed Solution for Test: Post-Fertlisation Events (Old NCERT) - Question 9

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.

Test: Post-Fertlisation Events (Old NCERT) - Question 10

What is the disadvantage of parthenogenesis?

Detailed Solution for Test: Post-Fertlisation Events (Old NCERT) - Question 10

Since there is no fertilization of gametes taking place, there is no crossing over of genes taking place. This hence causes no variations in the generations. This makes it difficult for the offspring to adapt to the changing environmental conditions.

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