1. | The first word in a biological name represents the genus name and the second is a specific epithet. |
2. | The names are derived from Latin and written in italics. |
3. | When written by hand, the names are to be underlined. |
4. | Biological names can be written in any language. |
Select the wrong statement:
1. | The walls of diatoms are easily destructible |
2. | Diatomaceous earth is formed by the cell walls of diatoms |
3. | Diatoms are chief producers in the oceans |
4. | Diatoms are microscopic and float passively in water |
Match the organisms in Column-I with habitats in Column-II.
Column-I | Column-II | ||
(a) | Halophiles | (i) | Hot springs |
(b) | Thermoacidophiles | (ii) | Aquatic environment |
(c) | Methanogens | (iii) | Guts of ruminants |
(d) | Cyanobacteria | (iv) | Salty areas |
Select the correct answer from the options given below:
Options: | (a) | (b) | (c) | (d) |
1. | (iv) | (i) | (iii) | (ii) |
2. | (i) | (ii) | (iii) | (iv) |
3. | (iii) | (iv) | (i) | (i) |
4. | (ii) | (iv) | (iii) | (i) |
Which of the following statements is incorrect?
1. | Yeasts have filamentous bodies with long thread-like hyphae. |
2. | Morels and truffles are edible delicacies. |
3. | Claviceps is a source of many alkaloids and LSD. |
4. | Conidia are produced exogenously and ascospores endogenously. |
Which of the following statements is incorrect?
1. | Prions consist of abnormally folded proteins |
2. | Viroids lack a protein coat |
3. | Viruses are obligate parasites |
4. | Infective constituent in viruses is the protein coat |
An example of colonial alga is:
1. | Volvox | 2. | Ulothrix |
3. | Spirogyra | 4. | Chlorella |
From an evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in:
1. | Gymnosperms | 2. | Liverworts |
3. | Mosses | 4. | Pteridophytes |
Floridian starch has structure similar to :
1. Amylopectin and glycogen
2. Mannitol and algin
3. Laminarin and cellulose
4. Starch and cellulose
Root hairs develop from the region of:
1. | Elongation | 2. | Root cap |
3. | Meristematic activity | 4. | Maturation |