Class 11 Biology - Chapter Biological Classification NCERT Solutions | What are the characteristic features of
What are the characteristic features of Euglenoids?
Some characteristic features of Euglenoids are as follows.
• Euglenoids (such as Euglena) are unicellular protists commonly found in fresh water.
• Instead of cell wall, a protein-rich cell membrane known as pellicle is present.
• They bear two flagella on the anterior end of the body.
• A small light sensitive eye spot is present.
• They contain photosynthetic pigments such as chlorophyll and can thus prepare their own food. However, in absence of light, they behave similar to heterotrophs by capturing other small aquatic organisms.
• They have both plant and animal-like features, which makes them difficult to classify and hence they are called as connecting link between plants and animals.
More Questions From Class 11 Biology - Chapter Biological Classification
- Q:- Describe briefly the four major groups of Protozoa.
- Q:- State two economically important uses of: (a) Heterotrophic bacteria (b) Archaebacteria
- Q:- Discuss how classification systems have undergone several changes over a period of time?
- Q:- What do the terms phycobiont and mycobiont signify?
- Q:- Give a brief account of viruses with respect to their structure and nature of genetic material. Also name four common viral diseases.
- Q:- Give a comparative account of the classes of Kingdom Fungi under the following:
(i) Mode of nutrition
(ii) Mode of reproduction - Q:- Plants are autotrophic. Can you think of some plants that are partially heterotrophic?
- Q:- What is the nature of cell-walls in diatoms?
- Q:-
How are viroids different from viruses?
- Q:- Find out what do the terms algal bloom and red-tides signify.
Popular Questions of Class 11 Biology
- Q:- Why are living organisms classified?
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- Q:- What are the difficulties that you would face in classification of animals, if common fundamental features are not taken into account?
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- Q:- Answer in one word or one line. (i) Give the common name of Periplaneta americana. (ii) How many spermathecae are found in earthworm? (iii) What is the position of ovaries in the cockroach? (iv) How many segments are present in the abdomen of cockroach? (v) Where do you find malphigian tubules?
- Q:-
Which of the following is not correct?
(a) Robert Brown discovered the cell.
(b) Schleiden and Schwann formulated the cell theory.
(c) Virchow explained that cells are formed from pre-existing cells.
(d) A unicellular organism carries out its life activities within a single cell. - Q:- What are macromolecules? Give examples.
- Q:- What is the average cell cycle span for a mammalian cell?
- Q:- What are the factors affecting the rate of diffusion?
Recently Viewed Questions of Class 11 Biology
- Q:- Match the terms in column I with those in column II:
Column I Column II
(a) Compound epithelium (i) Alimentry canal
(b) Compound eye (ii) Cockroach
(c) Septal nephridia (iii) Skin
(d) Open circulatory system (iv) Mosaic vision
(e) Typhlosole (v) Earthworm
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Both lysosomes and vacuoles are endomembrane structures, yet they differ in terms of their functions. Comment.
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(a) Arithmetic growth
(b) Geometric growth
(c) Sigmoid growth curve
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Both a n b
Food reserve is paramylon found in cytoplasm
They contain Chlorophyll a or b ?
superb nyc
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