Saturday, September 30, 2017

Tuesday, September 19, 2017

Thermodynamics notes (Chemistry)

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Applications of biotechnology (biology)

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Sunday, September 17, 2017

Pteridophytes and gymnosperms pdf notes (biology)

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Friday, September 15, 2017

Genetic engineering pdf notes

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Thursday, September 14, 2017

Microbes in human welfare pdf notes (biology)

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Friday, September 8, 2017

Algae and bryophytes notes pdf (kingdom plantae)

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The living world previous year questions

Q-1) Choose the wrong statement with reference to subspecies.

A. They do not interbreed with individual of other species.

B. They are new species in the making.

C. Geographically isolated population of a species.

D. They show minor variations from parent population.

Q-2)  Which one of the following is not a correct statement?

A. Herbarium houses dried, pressed and preserved plant specimens.

B. Botanical gardens have collection of living plants for reference.

C. A museum has collection of photographs of plants and animals.

D. Key is a taxonomic aid for identification of specimens.

Q-3) Natural system of classification is given by

A.Bentham and Hooker

B. Carolus Linnaeus

C. Charles Darwin

D. Engler and Prantl

Q-4) Taxonomic hierarchy refers to

A

Step-wise arrangement of all categories for classification of plants and animals

B

A group of senior taxonomists who decide the nomenclature of plants and animals

C

A list of botanists or zoologists who have worked on taxonomy of a species or group

D

Classification of a species based on fossil record

Q-5)The taxon which includes related species is

A

Class

B

Order

C

Family

D

Genus

Q-6)  A taxon is observed. Himgiri variety which is resistant to hill bunt disease belongs to this taxon. In this taxon, pollen grains lose viability within 30 minutes of their release from anthers. The taxon belongs to the order

A

Sapindales

B

Polemoniales

C

Rosales

D

Poales

Q-7) The largest collection of herbarium in India is

A

Central National Herbarium, Kolkata

B

Southern Circle Herbarium, Coimbatore

C

Central Circle Herbarium, Allahabad

D

Blatter Herbarium, Mumbai

Q-8) The basic unit of classification is

A

Species

B

Genus

C

Family

D

Phylum

Q-9) Animals are classified into hierarchical groups. In which one of the following, the largest number of species is found? 

A

Genus

B

Order

C

Family

D

Cohort

Q-10) Which one of the following organisms is scientifically correctly named, correctly printed according to the 'International Rules of Nomenclature' and correctly described?

A

Plasmodium falciparum - a protozoan pathogen causing the most serious type of malaria.

B

Felis tigris - The Indian tiger, well protected in Gir forests.

C

E. Coli - Full name Entamoeba coli, a commonly occurring bacterium in human intestine.

D

Musca domestica - The common house lizards, a reptile.

Thursday, September 7, 2017

MCQs on digestive system

MCQ on Digestive System
1. Duodenum has characteristic Brunner’s gland which secrete two hormones called
a) kinase, estrogen
b) secretin, chelecystokinin
c) prolactin, parathrormone
d) estradiol, progesterone

2. Epithelial cells of the intestine involved in food absorption have on their surface
a) pinocytic vesicles
b) Zymogen granules
c) phagocytic vesicles
d) microvilli

3. Which one of the following mammalian cells is not capable of metabolising glucose to carbon dioxide aerobically?
a) Liver cells
b) Red blood cells
c) White blood cells
d) Unstraiated muscle cells

Digestive System

4. Stool of a person is whitish grey coloured due to malfunction of the following organ?
a) Pancreas
b) Spleen
c)  Kidney
d) Liver

5. If pancreas is removed, the compound which remain undigested is
a) Proteins
b) Carbohydrates
c) Fats
d) all of these

6. Most of the fat digestion occurs in
a) Rectum
b) Stomach
c) Duodenum
d) Small intestine

7. Where is protein digestion accomplished?
a) Stomach
b) Ileum
c) Rectum
d) Duodenum

8. Which of the following is not involved in the stimulation of release of pancreatic juice?
a) gastrin
b) Secretin
c) Trypsinogen
d) Cholecystokinin

9. What is common among amylase, rennin and trypsin?
a) These are produced in stomach
b) These act at a pH lower than 7
c) These all are proteins
d) These all are proteolytic enzymes

10. Which of the following is correct pairing of site of action and substrate of rennin?
a) mouth-starch
b) stomach-fat
c) stomach -casein
d) small intestine-casein

Answers
1. b) secretin, chelecystokinin
2. d) microvilli
3. b) Red blood cells
4. d) Liver
5. d) all of these
6. d) Small intestine
7. b) Ileum
8. c) Trypsinogen
9. c) These all are proteins
10. c) stomach -casein

Wednesday, September 6, 2017

The living world (NCERT based questions)

1) What is the Mode of reproduction in yeast and hydra?
Budding
2) In which organism Reproduction occurs by Regeneration in?
-Planaria(flat worms)
3) The most defining property of the living organisms?
-Self-conciousness
4) what is the total number of species that are known and described?
1.7-1.8 million
5) What is the first step of nomenclature?
- Identification
6) What is the expanded form of ICBN?
International code for botanical nomenclature
7) What's the expanded form of ICZN?
International code for Zoological Nomenclature
8) Who gave the sytem of binomial nomenclature?
Carlous linnaeous (karl von linnae)
9) What is the scientific name of mango?
  Mangifera indica
  10) What is process by which anything is grouped into convenient categories for easy study?
  - classification
  - 11) what is the scientific term for categories?
  - taxa
  - 12) what is the process of classification known as?
  - taxonomy
13) Who wrote the book systema naturae?
   Carlous linnaeous
14) what is the basic/fundamental unit of classification?
-species
15) What is the group of species known as?
-Genus
16) In which family the genera Solanum, petunia, datura are placed? 
Solanaceae
17) Who gave Natural system of classification ?
Bentham and Hooker
18)Where is the largest collection of herbarium is located in india?
Central national herbarum, kolkata
19) what is the botanical name of 'chana'?
Cicer arietinum
20) Who is regarded as the 'father of taxonomy'? 
Carlous linnaeous