Which of the following animals does not undergo metamorphosis?
Earthworm
Tunicate
Starfish
Moth
A.
Earthworm
Metamorphosis refers to the transformation of a larva into an adult.
The animal that performs metamorphosis is said to have indirect development.
In earthworm, development is direct which means no larval stage and hence no metamorphosis.
Select the incorrect match :
Lampbrush – Diplotene bivalents chromosomes
Allosomes – Sex chromosomes
Polytene chromosomes – Oocytes of amphibians
Submetacentric chromosome – L-shaped chromosomes
Nissl bodies are mainly composed of
Proteins and lipids
DNA and RNA
Free ribosomes and RER
Nucleic acids and SER
Which of the following events does not occur in rough endoplasmic reticulum?
Protein folding
Protein glycosylation
Phospholipid synthesis
Cleavage of signal peptide
Which of the following terms describe human dentition?
Thecodont, Diphyodont, Homodont
Thecodont, Diphyodont, Heterodont
Pleurodont, Diphyodont, Heterodont
Pleurodont, Monophyodont, Homodont
Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system
Amphibia
Reptilia
Osteichthyes
Aves
Which of the following features is used to identify a male cockroach from a female cockroach?
Presence of a boat-shaped sternum on the 9th abdominal segment
Presence of caudal styles
Presence of anal cerci
Forewings with darker tegmina
Which of the following organisms are known as chief producers in the oceans?
Dinoflagellates
Diatoms
Euglenoids
Cyanobacteria
Ciliates differ from all other protozoans in
using flagella for locomotion
having a contractile vacuole for removing excess water
having two types of nuclei
using pseudopodia for capturing prey
