Options:
- A. Nematods
- B. Arthropods
- C. Molluscs
- D. None of these
View Answer
B. Arthropods
Biology
in which cell ribosome are of large size and present either on endoplasmic reticulum or free in cytoplasm?
Options:
- A. prokaryotic
- B. eukaryotic
- C. both
- D. all the above
View Answer
B. eukaryotic
Of the following which one is not the characteristic of the plants included in psilopsida_____________?
Options:
- A. Gametophyte is colourless
- B. They have mycorrhizal association
- C. Rhizoids bear Rhizome
- D. Aerial branches have veinless outgrowths
View Answer
C. Rhizoids bear Rhizome
Which of the following statement about filicinae a group of tracheophytes is incorrect_________________?
Options:
- A. They belong to sphenopsida
- B. They are seedless and their leaves are called fronds
- C. They live in shady and moist areas.
- D. They show circinate vernation.
View Answer
A. They belong to sphenopsida
Stem of Psilophyton an example of psilogsida is differentiated into an underground rhizome and an aerial part both of which are _________ branched
Options:
- A. Isotomous
- B. Dichotomously
- C. Trichotomously
- D. Multichotomously
View Answer
B. Dichotomously
____________ was first to propose an objective definition of instinct.
Options:
- A. Thorpe
- B. Darwin
- C. Pavlov
- D. Kohler
View Answer
B. Darwin
Normal action potential of a neuronal cell is ___________?
Options:
- A. plus 50 mv
- B. plus 60 mv
- C. plus 70 mv
- D. plus 80 mv
View Answer
A. plus 50 mv
Microscopic gaps between the neuron endings are called__________?
Options:
- A. Transmitters
- B. Synapses
- C. Pores
- D. Nodes
View Answer
B. Synapses
Which of the following bacteria do not have flagella commonly__________?
Options:
- A. Cocci
- B. Bacilli
- C. Streptobacilli
- D. Vibrio
View Answer
A. Cocci
Aquatic arthropods respire through__________?
Options:
- A. Spiracles
- B. Gills
- C. Book lungs
- D. Both b and c
View Answer
D. Both b and c