SarkariPYQ

SSC CHSL 2023 PYQ — Question 115

SSC CHSL Tier II - 26 Jun 2023 - Shift 1 • General Awareness • Q115

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In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Astronomers have discovered 62 new moons orbiting the ringed planet Saturn. Though some of the moons had been (1)________ as early as 2019, it takes more than sighting an object close to a planet to (2) ________ it is a moon and not an asteroid making a brief close passage to that planet.

Performing a painstaking (3) ________ of matching objects detected on different nights over the course of 24 months, the team tracked 63 objects that they ended up confirming as moons. One of (4) ________ satellites was revealed back in 2021, with the remaining 62 moons gradually announced over the past few weeks.

Match the points under List I with those under List II.

List I (Phylum) List II (Example)

1. Porifera a. Sponge

2. Cnidaria b. Squid

3. Mollusca c. Centipede

4. Arthropoda d. Jellyfish

Show answer & explanation

Correct answer: B

Explanation

The correct answer is option 2 i.e. 1-a, 2-d, 3-b, 4-c

  • Porifera (Phylum) - Example: Sponge
  • Porifera is a phylum of simple, aquatic animals often referred to as sponges. Sponges are known for their porous, filter-feeding bodies. They are considered one of the most primitive multicellular organisms and lack true tissues or organs.
  • Cnidaria (Phylum) - Example: Jellyfish
  • Cnidaria is a phylum of marine animals that includes jellyfish, corals, and sea anemones. These creatures are characterized by specialized cells called cnidocytes, which contain stinging structures called nematocysts. Jellyfish are well-known representatives of this phylum.
  • Mollusca (Phylum) - Example: Squid
  • Mollusca is one of the largest phyla in the animal kingdom, and it includes a diverse group of animals such as snails, clams, octopuses, and squid. Squid, with their soft bodies, tentacles, and ink sacs, are cephalopods belonging to the Mollusca phylum.
  • Arthropoda (Phylum) - Example: Centipede
  • Arthropoda is the largest and most diverse phylum in the animal kingdom, including insects, arachnids (spiders, scorpions), crustaceans (lobsters, crabs), and myriapods (centipedes, millipedes). The centipede is an example of an arthropod, known for its many legs and segmented body