All Courses

Home

CSIR NET Life Sciences

DIVERSITY OF LIFE FORMS

The table below lists taxonomic groups (Column X) and their morphological features (Column Y). Column X A. Crustacea B. Chelicerata C. Phoron

Question

The table below lists taxonomic groups (Column X) and their morphological features (Column Y).
Column X
A. Crustacea
B. Chelicerata
C. Phoronida
Column Y
i. Two pairs of antennae
ii. Antennae absent
iii. Presence of lophophore
Which one of the following options represents all correct matches between Column X and Column Y?

A – ii; B – iii; C – i

A – iii; B – i; C – ii

A – i; B – iii; C – ii

A – i; B – ii; C – iii

Solution

Correct option is D

Correct Answer:
(d) A – i; B – ii; C – iii
Explanation:
Crustacea possess two pairs of antennae, a characteristic feature of the group.
Chelicerata do not have antennae; their first appendages are chelicerae.
Phoronida are lophophorates and show a lophophore, used for suspension feeding.
Information Booster :
· Arthropods are divided based on appendage type and number.
· Chelicerates include arachnids and horseshoe crabs.
· Lophophore-bearing phyla show feeding convergence.
· Morphological markers are fundamental in taxonomy.

Similar Questions

Given below are certain plant diseases and the pathogens responsible.

Disease	Pathogen Type
A. Panama disease of Banana	i. Bacterial
B. Red ring disease of Coconut	ii. Fungal
C. Malformation of Mango	iii. Nematode
D. Citrus Canker	iv. Viral

Which one of the following options correctly matches the disease with its pathogen?

The Red List of the IUCN categorises species (Column X) under multiple threat levels (Column Y). Match the following species with their IUCN status (as of the latest reports):

Column X	Column Y
A. Jerdon’s Courser (Rhinoptilus bitorquatus)	i. Critically Endangered
B. Indian Star Tortoise (Geochelone elegans)	ii. Endangered
C. Indian Dwarf Banana (Musa mannii)	iii. Least Concern
D. Teak (Tectona grandis)	iv. Vulnerable

10)

Match the animal phyla/classes (Column X) with their defining set of characteristics (Column Y).

Column X	Column Y
A. Phylum Platyhelminthes	i. Bilateral symmetry, pseudocoelomate, complete digestive tract, often microscopic with a corona of cilia.
B. Phylum Annelida	ii. Radial symmetry (often pentamerous as adults), water vascular system, exclusively marine, deuterostomes.
C. Class Insecta	iii. Bilateral symmetry, acoelomate, triploblastic, usually with a flattened body and an incomplete digestive tract (if present).
D. Phylum Echinodermata	iv. Segmented body (metamerism) with a true coelom, chitinous cheetae (typically), closed circulatory system.
	v. Exoskeleton of chitin, three main body parts (head, thorax, abdomen), six legs, usually with wings in the adult stage.