Identify the labelled part in the given figure and select the correct option.
A | B | |
1. | Heterocyst | Mucilaginous sheath |
2. | Mucilaginous sheath | Heterocyst |
3. | Heterocyst | Capsid |
4. | Pseudopodia | Mucilaginous sheath |
'Red tide' is caused by
(1) Gonyaulax
(2) Ceratium
(3) Triceratium
(4) All of these
The common characteristic showning by mushroom, smut and rust
(1) is characterised by presence of basidiocarps
(2) is characterised by presence of ascocarps
(3) all are pathogen
(4) all are saprophytic in nature
Protists obtain their food as
(1) photosynthesizers only
(2) chemosynthesizers
(3) heterotrophs only
(4) Both (1) and (3)
Diatoms do not decay easily because
1. they have siliceous walls
2. their body is impervious to water
3. they are chitinous
4. they are abundant in saline soil
Plant decomposers are
(1) Monera and Fungi
(2) Fungi and Plantae
(3) Protista and Animalia
(4) Animalia and Monera
1. The biological classification was attempted instinctively
a. to make scientific studies easy
b. to use organisms for our own use
c. to make better understanding of the research running in all over the world
d. to make connection between living and non-living
The first attempt for Biological classification was because of the need to use organisms for our own use. Here which kind of uses are considered?
(1) Food and shelter
(2) Food and Hunting
(3) Food, shelter and clothing
(4) Except clothing all are correct
First time the scientific basis for classification was attempted by -
(1) Theopharastus
(2) Aristotle
(3) Van Neil
(4) Darwin
Which of the following statement is not incorrect with respect to biological classification attempted by Aristotle?
(1) Based on complex morphological characters
(2) Plants were classified into trees, shrubs and herbs
(3) Animals were classified on the basis of nutrition
(4) Phylogeny was also considered