HSC Science (General)
Academic Year: 2017-2018
Date: July 2018
Advertisements
In an octamer of the nucleosome, core DNA consists of ______ base pairs.
46
146
246
346
Chapter: [0.04] Molecular Basis of Inheritance
Select and write the most appropriate answer from the given alternatives for the following subquestion:
A versatile anther is an adaptation for _______ type of pollination.
anemophilous
entomophilous
hydrophilous
ornithophilous
Chapter: [0.01] Reproduction in Lower and Higher Plants
_______ is an example of a GM crop developed for its nutritional value by using the soil bacterium Erwinia.
IR8
Taichung Native - I
Vijaya
Golden rice
Chapter: [0.12] Biotechnology
The energy enters the ecosystem through ______.
consumers
decomposers
omnivores
producers
Chapter: [0.14] Ecosystems and Energy Flow
Identify free-living bacterial bio-fertilizer.
Rhizobium
Azotobacter
Nostoc
Bacillus thuringiensis
Chapter: [0.11] Enhancement of Food Production
Select and write the most appropriate answer from the given alternatives for the folowing subquestion:
_______ is a soil bacterium which causes crown gall tumours in dicotyledonous plants.
Agrobacterium tumefaciens
Bacillus thuringiensis
Haemophilus influenzae
Escherichia coli
Chapter:
Which of the following harmful radiation is absorbed by the ozone layer of the stratosphere?
X-ray
Visible light
Ultraviolet rays
Gamma rays
Chapter: [0.15] Biodiversity, Conservation and Environmental Issues
Advertisements
Answer the following question in ‘One’ sentence only:
Define ‘mutation breeding’.
Chapter: [0.05] Origin and Evolution of Life
Answer the following question in ‘One’ sentence only:
Enlist the histones which form an octamer of nucleosome.
Chapter: [0.04] Molecular Basis of Inheritance
Answer the question in ‘One’ sentence only:
Name ‘any one’ therapeutic product of blood proteins made by using rDNA technology.
Chapter: [0.12] Biotechnology
Name the strain of yeast used in the industrial production of wine.
Chapter: [0.01] Reproduction in Lower and Higher Plants
Answer each question in ‘One’ sentence only:
Identify which one of the following is a test cross.
Tt × Tt
TT × tt
Tt × tt
Chapter: [0.05] Origin and Evolution of Life
Answer each question in ‘One’ sentence only:
Define stock and scion.
Chapter: [0.11] Enhancement of Food Production
Advertisements
Attempt any TWO of the following:
‘The gene for sickle cell anaemia in homozygous condition is lethal and produces sickle cell trait in heterozygous carrier’. Explain.
Chapter: [0.03] Inheritance and Variation
Attempt any TWO of the following:
Enlist the applications of tissue culture.
Chapter: [0.11] Enhancement of Food Production
Attempt any TWO of the following:
Describe ‘any two’ factors affecting the rate of photosynthesis.
Chapter:
Attempt any TWO of the following:
Define the terms ‘codon’ and ‘anticodon’.
Chapter: [0.04] Molecular Basis of Inheritance
Explain in brief the biogas production process with the help of a labelled figure.
Chapter: [0.11] Enhancement of Food Production
Attempt any TWO of the following:
Define ‘deforestation’. Comment on its effects
Chapter: [0.15] Biodiversity, Conservation and Environmental Issues
Attempt any TWO of the following:
With the help of a suitable example illustrate ‘Palindrome’.
Chapter: [0.04] Molecular Basis of Inheritance
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 2017 - 2018
Previous year Question paper for Maharashtra State Board 12th Standard Board Exam Biology-2018 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.
