Pdf biology questions and answers

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pdf biology questions and answers

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They are quantitative and show intermediates discontinuous variation differences are clear cut e. LL,ll Heterozygous when two alleles are different at a particular locus e. Ll F1 and F2 Fl means first filial generation i. Assume letter L denotes gene for wing size. The gene for long wings is dominant to that for short wings the genes for dominant are LL and for recessive ll.

Biology Questions and Answers Form 2 - Biology Form Two Notes

Solved examples with detailed answer description, explanation are given and it would be easy to understand. Here you can find objective type General Knowledge Biology questions and answers for interview and entrance examination.

Multiple choice and true or false type questions are also provided. You can easily solve all kind of General Knowledge questions based on Biology by practicing the objective type exercises given below, also get shortcut methods to solve General Knowledge Biology problems.

Pine, fir, spruce, cedar, larch and cypress are the famous timber-yielding plants of which several also occur widely in the hilly regions of India. All these belong to. All Rights Reserved.

Contact us: info. Current Affairs General Knowledge. Microbiology Biochemistry Biotechnology Biochemical Engineering. Why General Knowledge Biology? Where can I get General Knowledge Biology questions and answers with explanation? How to solve General Knowledge Biology problems? Exercise :: Biology - Section 1 Biology - Section 1.

Ordinary table salt is sodium chloride. What is baking soda? Potassium chloride B. Potassium carbonate C. Potassium hydroxide D. Let us discuss.

Report errors. Ozone hole refers to A. All these belong to A. Pollination is best defined as A. Plants receive their nutrients mainly from A. Movement of cell against concentration gradient is called A.

Facilitated diffusion only moves species down their concentration gradient from high to low concentration. Current Affairs Interview Questions and Answers. Movement of cell against concentration gradient is called.

Biology Exam Paper.pdf

Attraction of water molecules to the Walls adhesion from the stem water enters the xylem of leaves water moves in the xylem vessels of the stem in a continuous uninterrupted water column up to the tree leaves Leaves once in the leaves water moves into the mesophyll cells by osmosis as water vaporizes from the spongy mesophyll cells their sap becomes more concentrated than the adjacent cells as the result water flows into the cell from other surrounding cells which in turn takes in water from xylem vessels within the leaf veins this creates a pull suction force called transpiration pull that pulls a stream of water from xylem vessels in the stem and roots. The transpiration pull maintains a continuous column of water from the roots to the leaves. Absence of cuticle also increase rate of transpiration ii Explain the environmental factors that affect rate of transpiration in plants high temperature increases rate of transpiration and low temperature reduces the rate humidity when high increases rate and when low reduces the rate transpiration rate is higher in moving air wind than in still air high light intensity increases internal temperature hence higher rate of evaporation leading to higher rate of transpiration availability of water in the soil leads to more absorption hence more loss to the atmosphere atmospheric pressure when high leads to more evaporation and when low leads to low rate evaporation of water iii State the structural differences between xylem vessels and sieve tubes sieve tubes have cross wall while xylem vessels have none xylem vessels are lignified while sieve tubes are not Sieve tubes have cytoplasm elements while xylem vessels have none. Water vapour accumulates in the depression of stomata lowering the water vapour concentration gradient leading to lower rate of evaporation rolling of leaves v State the factors that cause increase in the rate of transpiration from leaves increased light intensity low relative humidity temperature vi Explain how drooping of leaves on a hot sunny day is advantageous to a plant reduces surface area exposed to sun reducing cuticular transpiration c Explain how aquatic and terrestrial plants are adapted to deal with problems of transpiration a. Mesophytes they grow in soils with enough water water loss is perfectly balanced by absorption of more from the soil no special adaptations b. Either cut a stem of a young plant or twig of a tree under water or else uproot a young herbaceous plant and wash the soil gently put some water in a beaker and add a dye i. OR use radio-active tracers, C14 in form of carbon ring a plant then put it in a container containing radio-active phosphorous solution The radio-active phosphorus is later detected in the leaves.

General Knowledge - Biology

Solved examples with detailed answer description, explanation are given and it would be easy to understand. Here you can find objective type General Knowledge Biology questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided. You can easily solve all kind of General Knowledge questions based on Biology by practicing the objective type exercises given below, also get shortcut methods to solve General Knowledge Biology problems. Pine, fir, spruce, cedar, larch and cypress are the famous timber-yielding plants of which several also occur widely in the hilly regions of India.

As you know that there are few months are left for the exam. Subscribe to get notification and free study materials. It includes descriptions, theories, definitions, discoveries, diagrams, explanation of differences and relations. Just click on the topic then you will able to download the pdf of that topic. NEET exam will be conducted in Offline mode.

Top 50+ Cell Biology Multiple Choice Questions and Answers - 1

If you use extra sheets of paper, be sure to write clearly the number of the question being. Write your SPIN on the top right hand corner of each sheet, and tie it securely at. NOTE: You may not have seen or studied any of the organisms used as examples in this paper.

Book Biology Questions and Answers pdf

Molecular biology multiple choice questions and answers PDF exam book to download provides solved quiz questions and answers on topics: Aids, bioinformatics, biological membranes and transport, biotechnology and recombinant DNA, cancer, DNA replication, recombination and repair, environmental biochemistry, free radicals and antioxidants, gene therapy, genetics, human genome project, immunology, insulin, glucose homeostasis and diabetes mellitus, metabolism of xenobiotics, overview of bioorganic and biophysical chemistry, prostaglandins and related compounds, regulation of gene expression, tools of biochemistry, transcription and translation for graduate students, freshers and beginners. Bioinformatics multiple choice questions and answers PDF covers MCQ quiz answers on topics: History, databases, and applications of bioinformatics. Biological membranes and transport multiple choice questions and answers PDF covers MCQ quiz answers on topics: Chemical composition and transport of membranes. Biotechnology and recombinant DNA multiple choice questions and answers PDF covers MCQ quiz answers on topics: DNA in disease diagnosis and medical forensics, genetic engineering, gene transfer and cloning strategies, pharmaceutical products of DNA technology, transgenic animals, biotechnology and society. Free radicals and antioxidants multiple choice questions and answers PDF covers MCQ quiz answers on topics: Types, sources and generation of free radicals. Genetics multiple choice questions and answers PDF covers MCQ quiz answers on topics: Basics, patterns of inheritance and genetic disorders. Immunology multiple choice questions and answers PDF covers MCQ quiz answers on topics: Immune system, cells and immunity in health and disease.

Important Questions for CBSE Class 12 Biology

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