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Question Bank Solutions for HSC Science (General) 12th Board Exam - Maharashtra State Board - Biology

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Biology
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Define r-DNA technology.

[2.01] Biotechnology - Process and Application
Chapter: [2.01] Biotechnology - Process and Application
Concept: Transposons

If centromere is situated in the middle of the chromosome, it is called ________.

(a) Metacentric

(b) Acrocentric

(c) Submetacentric

(d) Telocentric

[7.02] Chromosomal Basis of Inheritance
Chapter: [7.02] Chromosomal Basis of Inheritance
Concept: Inheritance of Two Genes > Chromosome Theory of Inheritance

Struggle between cow and cow for getting grass is called ________.

(a) Inter-specific struggle

(b) Environmental struggle

(c) Struggle against natural calamities

(d) Intra-specific struggle

[6.01] Organisms and Environment 1 - Habitat and Niche
Chapter: [6.01] Organisms and Environment 1 - Habitat and Niche
Concept: Ecosystems Patterns

Mating of two closely related individuals within the same breed is called ______.

(a) In-breeding

(b) Out-breeding

(c) Out-crossing

(d) Cross-breeding

[9.02] Animal Husbandry
Chapter: [9.02] Animal Husbandry
Concept: Animal Husbandry

Visit of a veterinary doctor to dairy farm is mandatory. Give reasons.

[9.02] Animal Husbandry
Chapter: [9.02] Animal Husbandry
Concept: Animal Husbandry

Why aquatic animals can afford to be ammonotelic?

[10.02] Excretion and Osmoregulation
Chapter: [10.02] Excretion and Osmoregulation
Concept: Modes of Excretion - Ammonotelism

Give the economic importance of ‘fisheries’

[9.02] Animal Husbandry
Chapter: [9.02] Animal Husbandry
Concept: Animal Husbandry

 Describe the structure of cerebrum. Add a note on its function.

[10.03] Control and Co-ordination
Chapter: [10.03] Control and Co-ordination
Concept: Neural System

Transfer of genetic material into a bacterial cell through a viral vector is known as

[1.02] Gene - Its Nature, Expression and Regulation
Chapter: [1.02] Gene - Its Nature, Expression and Regulation
Concept: Search for Genetic Material > Introduction of Search for Genetic Material

If the number of chromosomes in an endosperm cell is 27, what will be the chromosome number in the definitive nucleus?

  1. 9
  2. 18
  3. 27
  4. 36
[7.02] Chromosomal Basis of Inheritance
Chapter: [7.02] Chromosomal Basis of Inheritance
Concept: Inheritance of Two Genes > Chromosome Theory of Inheritance

Name the enzyme responsible for delay in ripening of tomato fruit.

[3.01] Enhancement in Food Production
Chapter: [3.01] Enhancement in Food Production
Concept: Introduction of Strategies for Enhancement in Food Production

In which of the following haploid cells a whole genome in human being is present?

  1. sperm
  2. somatic cell
  3. mature RBC
  4. primary spermatocyte
[8.01] Genetic Engineering and Genomics
Chapter: [8.01] Genetic Engineering and Genomics
Concept: Human Genome Project

In____________ , superior males of one breed are mated with superior females of another breed.

  1. out crossing
  2. cross breeding
  3. out breeding
  4. inbreeding
[9.02] Animal Husbandry
Chapter: [9.02] Animal Husbandry
Concept: Animal Husbandry

What is gene pool?

[7.02] Chromosomal Basis of Inheritance
Chapter: [7.02] Chromosomal Basis of Inheritance
Concept: Inheritance of Two Genes > Chromosome Theory of Inheritance

What does abbreviation HGP stand for?

[8.01] Genetic Engineering and Genomics
Chapter: [8.01] Genetic Engineering and Genomics
Concept: Human Genome Project

Give 'two' varieties of silk which are considered  as inferior quality

[9.02] Animal Husbandry
Chapter: [9.02] Animal Husbandry
Concept: Animal Husbandry

With the help of a labelled diagram of lateral view of cerebrum, describe the structure .

[10.03] Control and Co-ordination
Chapter: [10.03] Control and Co-ordination
Concept: Neural System

With the help of a neat, labelled diagram describe the human male reproductive system.

[11.01] Human Reproduction
Chapter: [11.01] Human Reproduction
Concept: The Male Reproductive System

Edible fruiting bodies are produced by _______.

(A) Yeast

(B) Rhizopus

(C) Nostoc

(D) Agaricus

[3.01] Enhancement in Food Production
Chapter: [3.01] Enhancement in Food Production
Concept: Introduction of Strategies for Enhancement in Food Production

Mention any ‘two’ methods used to prevent spoilage of fish

[9.02] Animal Husbandry
Chapter: [9.02] Animal Husbandry
Concept: Animal Husbandry
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Question Bank Solutions for HSC Science (General) 12th Board Exam Maharashtra State Board Biology. You can further filter Question Bank Solutions by subjects and topics. Solutions for most of the questions for Maharashtra State Board can be found here on Shaalaa.com. You can use these solutions to prepare for your studies and ace in exams. Solving questions is a great way to practice and with Shaalaa.com, you can answer a question and then also check your answer with the solutions provided.
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