Which of the following represents the class of Tubifex?
Echiurida
Archiannetida
Hirudinea
Oligochaeta
Choose the option representing the incorrect match of different feature of major classes of algae.
Class | Cell wall | Dominant pigment |
Chlorophyceae | Cellulose + pectic material | Chl a and b, and carotene |
Phaeophyceae | Silica + pectic material | Chl a and c, carotene |
Rhodophyceae | Pectic material + cellulose | Chl a and d, carotene |
Cyanophyceae | Mucopeptide + Mumaric acid | Chl a, carotene |
Select the mismatch from those given below.
Noctiluca bioluminescence
Gonyaulax catenella saxitoxin
Pyrodinum red tide
Ceratium-zygotic meiosis
Receptacle of antheridiophore and archegoniophore of Marchantia respectively are
8 lobed, 9 rays
6 lobed, 4 rays
9 lobed, 5 rays
2 lobed, 6 rays
The Floral formula of tobacco is
BrOK(5) C(5) A5 G(2)
OK6 - 5 A10 G(2)
BrOK2 + 2 C4 A2 + 4 G1(d)
OP2 A3 G1
The metrics described by whittaker which takes into account the number of species and their eveness is
Shannon index
Beta diversity
Species richness
Simpson index
A.
Shannon index
Whittaker described three common metrices to measure species level biodiversity, encompassing attention to species richness or evenness. They includes:
(i) Species richness - Number of given species in given area.
(ii) Simpson index - Number of species present as well as there relative abundance.
(iii) Shannon index - Number of species and their evenness.
Identify the correct match from the type of amino acids and their respective example.
Neutral - Proline (Pro)
Acidic - Asparagine (Asn)
Aromatic - Tryptophan (Try)
S-containing - Methionine (met)
Study the following statements with reference to drugs and choose the incorrect one
I. Barbiturates cause sleeplessness.
II. Opioids are obtained from the leaves of Erythroxylum coca.
III. Morphine is a very effective sedative and pain killer.
IV. Cocaine is obtained from Indian hemp plant.
I, II, III
II, III, IV
I, III, IV
I, II, IV
During fertilisation, zona pellucida is dissolved by
hyaluronidase
hyaluronic acid
renin
acrosin