HSC Science (General)
Academic Year: 2021-2022
Date: मार्च 2022
Advertisements
General instructions:
- The question paper is divided into four sections:
- Section A: Question No. 1 contains 10 multiple choice type questions carrying one mark each. Question No. 2 contains 8 very short answer type questions carrying one mark each.
- Section B: Question No. 3 to Question No. 14 are 12 short answer-I type questions carrying two marks each. Attempt any eight questions.
- Section C: Question No. 15 to Question No. 26 are 12 short answer-II type questions carrying three marks each. Attempt any eight questions.
- Section D: Question No. 27 to Question No. 31 are 5 long answer type questions carrying four marks each. Attempt any three questions.
- Start each section on a new page.
- Figures to the right indicate full marks.
- For each MCQ, correct answer must be written along with its alphabet.
e.g., (a) ..... / (b ) .... / ( c ) .... / ( d) ..... Only first attempt will be considered for evaluation.
The single shield-shaped cotyledon in monocot seed is known as ______.
coleoptile
scutellum
aleurone layer
perisperm
Chapter: [0.01] Reproduction in Lower and Higher Plants [0.02] Reproduction in Lower and Higher Animals
Which one of the following is the most accurate definition of the term ‘health’?
Health is the state of body and mind in a balanced condition
Health is the reflection of a smiling face.
Health is a state of complete physical, mental and social well-being.
Health is the symbol of economic prosperity.
Chapter: [0.1] Human Health and Diseases
Meanrch, menstrual cycle, and menopause are controlled by ______.
thyrotropic hormone
gonadotropic hormone
somatotropic hormone
corticotropin
Chapter: [0.02] Reproduction in Lower and Higher Animals
Root hair is ________ extension of epiblema cells.
Cytoplasmic
Protoplasmic
Nucleoplasmic
Cellulosic
Chapter: [0.06] Plant Water Relation
The cattle egret and grazing cattle in close association is a classic example of ______.
Mutualism
Parasitism
Commensalism
Competition
Chapter: [0.13] Organisms and Populations
______ has an important role in the development of immune system by maturation of T lymphocytes.
Thyroxine
Thymosin
Aldosterone
Parathormone
Chapter: [0.09] Control and Co-ordination
Select the odd example with respect to types of conservation strategies.
Pawra tribals in Satpuda have protected varieties of corn with different coloured kernels.
Kanha forest as tiger reserve.
Crocodile bank of Chennai
Sacred groves
Chapter: [0.15] Biodiversity, Conservation and Environmental Issues
Lichens taking roots on bare rocks are an example of ______.
climax community
pioneer species
climax species
secondary succession
Chapter: [0.14] Ecosystems and Energy Flow
First natural cytokinin was obtained from ______.
Rice plants
Tobacco callus
Maize grains
Human urine
Chapter: [0.07] Plant Growth and Mineral Nutrition
The volume of air that remains in the lungs after maximum respiration is ______.
1000 to 1100 ml
1100 to 1200 ml
2000 to 3000 ml
5200 to 5800 ml
Chapter: [0.08] Respiration and Circulation
Why is ABA known as antitranspirant?
Chapter: [0.07] Plant Growth and Mineral Nutrition
What is ‘Leukemia’?
Chapter: [0.1] Human Health and Diseases
What is ‘Sere’?
Chapter: [0.14] Ecosystems and Energy Flow
How electrical synapse differs from chemical synapse?
Chapter: [0.09] Control and Co-ordination
Advertisements
What is the role of Taq-polymerase in PCR technology?
Chapter: [0.12] Biotechnology
Identify the IUD in the given diagram.
Chapter: [0.02] Reproduction in Lower and Higher Animals
A medicinal plant Rauwolfia vomitoria shows variations in concentration of reserpine from location to location. What type of level of biodiversity is this?
Chapter: [0.15] Biodiversity, Conservation and Environmental Issues
Differentiate between complete and incomplete linkage.
Chapter: [0.03] Inheritance and Variation
Enlist any four therapies used to treat a cancer patient.
Chapter: [0.1] Human Health and Diseases
Draw a well labelled diagram of male gametophyte of angiosperms.
Chapter: [0.01] Reproduction in Lower and Higher Plants
What is Mortality? What are its two types?
Chapter: [0.13] Organisms and Populations
With the help of any one example explain Alien species invasion as one of the causes of Biodiversity losses.
Chapter: [0.15] Biodiversity, Conservation and Environmental Issues
Which hormone is secreted by Pineal gland? What is its function?
Chapter: [0.09] Control and Co-ordination
Match the column A with B
| A | B | |
| i. | Epinasty of flower | GA3 |
| ii. | Natural auxin | NAA |
| iii. | Flowering in Litchi | IAA |
| iv. | Bolting of Beet | Ethylene |
Chapter: [0.07] Plant Growth and Mineral Nutrition
What is lactation? Which hormone is responsible for its regular secretion?
Chapter: [0.02] Reproduction in Lower and Higher Animals
Give reasons – ‘Primary succession is always slower than secondary succession’
Chapter: [0.14] Ecosystems and Energy Flow
Define Bohr effect and Haldane effect.
Chapter: [0.08] Respiration and Circulation
How t-RNA act as an adapter molecule?
Explain in detail with the help of a diagram.
Chapter: [0.04] Molecular Basis of Inheritance
Give an account of polyembryony.
Chapter: [0.01] Reproduction in Lower and Higher Plants
How biotechnology is used in production of Human insulin.
Chapter:
Draw the chart of double circulation and label A, B, C and D.
Chapter: [0.08] Respiration and Circulation
Advertisements
Name any three types of premating isolating mechanisms.
Chapter: [0.05] Origin and Evolution of Life
What is GM plant? Write its different advantages.
Chapter: [0.12] Biotechnology
Write the name of Gaseous growth hormone known to you.
Chapter: [0.07] Plant Growth and Mineral Nutrition
Write the name of Standard bioassay method for auxins.
Chapter: [0.07] Plant Growth and Mineral Nutrition
Write the name of Hormone that can overcome the requirement of vernalization.
Chapter: [0.07] Plant Growth and Mineral Nutrition
Name three Mixed cranial nerves along with their numbers.
Chapter: [0.09] Control and Co-ordination
Match the column A with B and rewrite correct pairs.
| A | B | ||
| 1. | citric acid | a) | in medicine for solubility of Ca++ |
| 2. | fumaric acid | b) | confectionary |
| 3. | gluconic acid | c) | in resins as wetting agents |
Chapter: [0.11] Enhancement of Food Production
Draw a neat and labelled diagram of the Root tip showing the root hair zone.
Chapter: [0.06] Plant Water Relation
Describe the development of dicot embryo in flowering plants.
Chapter: [0.01] Reproduction in Lower and Higher Plants
Mention any four benefits of biogas.
Chapter: [0.11] Enhancement of Food Production
How roots can act as a water absorbing organ?
Chapter: [0.06] Plant Water Relation
Write down the three main concepts of the modern synthetic theory.
Chapter: [0.05] Origin and Evolution of Life
Draw labelled diagram of internal structure of human heart.
Label right atrium, mitral valve, left ventricle and pulmonary semilunar valve.
Write a function of Eustachian and tricuspid valve found in human heart.
Chapter: [0.08] Respiration and Circulation
Give an account of one Mendelian and one chromosomal disorder you have studied.
Chapter: [0.03] Inheritance and Variation
Complete the flowchart of the process of conduction of nerve impulses.
| Application of stimulus on a resting nerve |
| ⇓ |
| Permeability of membrane changes |
| ⇓ |
| ______________________________ |
| ⇓ |
| Positive ions inside axon increases |
| ⇓ |
| ________________________________ |
| ⇓ |
| Polarity reverses and depolarisation takes place |
| ⇓ |
| Repolarisation - potassium gates open |
| ⇓ |
| ______________________________ |
| ⇓ |
| ______________________________ |
| ⇓ |
| Axoplasm becomes negatively charged and ECF becomes positive |
Chapter:
Draw a neat and labelled diagram of transcription and processing of hn-RNA
Chapter: [0.04] Molecular Basis of Inheritance
Explain the ovarian cycle with its different phases.
Chapter: [0.02] Reproduction in Lower and Higher Animals
Other Solutions
Submit Question Paper
Help us maintain new question papers on Shaalaa.com, so we can continue to help studentsonly jpg, png and pdf files
Maharashtra State Board previous year question papers 12th Standard Board Exam Biology with solutions 2021 - 2022
Previous year Question paper for Maharashtra State Board 12th Standard Board Exam Biology-2022 is solved by experts. Solved question papers gives you the chance to check yourself after your mock test.
By referring the question paper Solutions for Biology, you can scale your preparation level and work on your weak areas. It will also help the candidates in developing the time-management skills. Practice makes perfect, and there is no better way to practice than to attempt previous year question paper solutions of Maharashtra State Board 12th Standard Board Exam.
How Maharashtra State Board 12th Standard Board Exam Question Paper solutions Help Students ?
• Question paper solutions for Biology will helps students to prepare for exam.
• Question paper with answer will boost students confidence in exam time and also give you an idea About the important questions and topics to be prepared for the board exam.
• For finding solution of question papers no need to refer so multiple sources like textbook or guides.
