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Answered on 24/12/2017 CBSE/Class 11/Science/Biology Tuition/Class XI-XII Tuition (PUC)

Bhuvesh Yadav

Tutor

Homeotherms are animals that have a constant body temperature. Poikilotherms are animals whose body temperature adjusts depending on the environment.
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Answered on 27/12/2017 CBSE/Class 11/Science/Biology Tuition/Class XI-XII Tuition (PUC)

Dhiraj Panja

Specially Biology

Diploblastic; body derived from two cell layer (endoderm&ectoderm)and triploblastic ;body derived from complete three embryonic cell layers i,e. Ectoderm,mesoderm,endoderm.
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Answered on 16/12/2017 CBSE/Class 11/Science/Biology Tuition/Class XI-XII Tuition (PUC)

Ekta Vishwakarma

Tutor

Amphibians are those organisms which live on both land and in water. Bryophytes are called amphibians of the plant kingdom because these plants though live in soil but they need water for sexu@l reproduction.
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Answered on 17/12/2017 CBSE/Class 11/Science/Biology Tuition/Class XI-XII Tuition (PUC)

Ekta Vishwakarma

Tutor

(a) They are smaller than bacteria. (b) They can be filterable. (c) May cause infection and diseases like small pox, flu etc. (d) Able to reproduce in host cells. (e) Use enzymes and metabolic machinery of host cell. (f) DNA/RNA is their genetic material. (g) They are obligate parasites, self replicating,... read more
(a) They are smaller than bacteria. (b) They can be filterable. (c) May cause infection and diseases like small pox, flu etc. (d) Able to reproduce in host cells. (e) Use enzymes and metabolic machinery of host cell. (f) DNA/RNA is their genetic material. (g) They are obligate parasites, self replicating, non- cellular organisms. (h) Plant viruses mostly have single stranded (ss) RNA. (i) All animal viruses mostly have single or double stranded RNA/DNA. (j) They have protein coat called capsid that protects nucleic acid. (k) They cause diseases in plants like mosaic, leaf curling, leaf role, yellowing, vein clearing, dwarfing as well as stunted growth etc. read less
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Answered on 31/12/2017 CBSE/Class 11/Science/Biology Tuition/Class XI-XII Tuition (PUC)

Debraj Paul Study Champion

Excellence Award Winner

As there are millions of living organisms on earth, studying each of them is impossible. Therefore, scientists have devised mechanisms to classify all living organisms. These methods of classification are based on rules and principles that allow identification, nomenclature, and finally classification... read more
As there are millions of living organisms on earth, studying each of them is impossible. Therefore, scientists have devised mechanisms to classify all living organisms. These methods of classification are based on rules and principles that allow identification, nomenclature, and finally classification of an organism read less
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Answered on 07 Mar CBSE/Class 11/Science/Biology Tuition/Class XI-XII Tuition (PUC)

Sujatha

Tutor

Binomial nomenclature Taxonomical hierarchy.
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Answered on 02 Jan CBSE/Class 11/Science/Biology Tuition/Class XI-XII Tuition (PUC)

Divya Francis

Chemistry Tutor

Bacteria reproduces asexually, through binary fission ( i.e, one cell divides into 2 identical cells called daughter cells.)
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Answered on 12 Mar CBSE/Class 11/Science/Biology Tuition/Class XI-XII Tuition (PUC)

Arvind Singh

Tutor

Capsule is the distal most part of the sporophyte stage of mosses. Inside capsule haploid spores are formed after meiosis. These spores after dispersal and upon reception of optimum envromnent (moisture/temp) germinate to produce male or female gametophyte. Hence, we should remember that without the... read more

Capsule is the distal most part of the sporophyte stage of mosses. Inside capsule haploid spores are formed after meiosis. These spores after dispersal and upon reception of optimum envromnent (moisture/temp) germinate to produce male or female gametophyte. Hence, we should remember that without the capsule the haploid generation in the mosses wouldnt occur.

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Answered on 24 Feb CBSE/Class 11/Science/Biology Tuition/Class XI-XII Tuition (PUC)

What are the steps to set up a herbarium?

M Murali Mohan Gutti

Select what type of plants you want to collect (like shurbs, herbs or trees). Collects leaf and flowers or tigs with leaf and flowers (Specimen) Dry the specimens in the air or under sunlight for one day (so that excess water will be lost) and place specimen in the book with some weight on the book.... read more

Select what type of plants you want to collect (like shurbs, herbs or trees).

Collects leaf and flowers or tigs with leaf and flowers (Specimen)

Dry the specimens in the air or under sunlight for one day (so that excess water will be lost) and place specimen in the book with some weight on the book. Due to this specimen will in good condition without getting spoiled my fungi.

Take herbarium sheets and stick the dried specimen on the sheet with well lablled classification.

 

 

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Answered on 08 Mar CBSE/Class 11/Science/Biology Tuition/Class XI-XII Tuition (PUC)

Who gave live Kingdom classification? What was the criteria used for such classification?

Gouthami

Tutor

Two kingdom classification was given by Carolus Linnaeus that is kingdom plantae and animalia based on whether organism performing photosynthesis (plantae) and locomotion (animals). Three kingdom classification was given by Ernst Haeckel ie plantae, animalia and (protista for unicellular organism).... read more

Two kingdom classification was given by Carolus Linnaeus  that is kingdom plantae and animalia based on whether organism performing photosynthesis (plantae) and locomotion (animals).

Three kingdom classification was given by Ernst Haeckel ie plantae, animalia and (protista for unicellular organism). 

Four kingdom classification was given by Copeland. He included Monera(Mychota) for prokaryotes along with plantae, animalia, protista.

Five kingdom classification was given by Robert H.Whittaker. He included fungi based on saprophytic mode of nutrition. 5 kingdom classification includes Monera,protista,fungi,plantae, animalia.

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