| 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. | 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
| 1. | Thorns of citrus |
| 2. | Tendrils of cucumber |
| 3. | Flattened structure of Opuntia |
| 4. | Pitcher of Nepenthes |
Root hairs develop from the region of:
| 1. | Elongation | 2. | Root cap |
| 3. | Meristematic activity | 4. | Maturation |
Match the placental types Column-I with their examples Column-II.
| Column-I | Column-II | ||
| (a) | Basal | (i) | Mustard |
| (b) | Axile | (ii) | China rose |
| (c) | Parietal | (iii) | Dianthus |
| (d) | Free central | (iv) | Sunflower |
Choose the correct answer from the following options:
| Options: | (a) | (b) | (c) | (d) |
| 1. | (ii) | (iii) | (iv) | (i) |
| 2. | (i) | (ii) | (iii) | (iv) |
| 3. | (iv) | (ii) | (i) | (iii) |
| 4. | (iii) | (iv) | (i) | (ii) |