General Science Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations. These questions are part of GKToday’s 35000+ MCQs Bank Course in GKToday Android App
31. What is the meaning of abscission among the following?
[A] Dropping of Leaves
[B] Dropping of Fruits
[C] Dropping of Flowers
[D] All of these
Show Answer
Correct Answer: D [All of these]
Notes:
In plants, abscission is the process of discarding old or unwanted organs such as leaves, flowers, floral organs, and fruits.
32. Which of the following pair is not correctly matched?
[A] Arthropoda – spiders
[B] Mollusca – oysters
[C] Echinodermata – Starfish
[D] Chordata – snails
Show Answer
Correct Answer: D [Chordata – snails]
Notes:
Snail is an example of Phylum Mollusca. Their body is divided into head, legs and visceral mass and their head consist of antennae with eyes. They have an open circulatory system.
33. Cnidarians, which exhibit only polyp stage__
[A] Cubozoa
[B] Scyphozoa
[C] Anthozoa
[D] Hydrozoa
Show Answer
Correct Answer: C [Anthozoa]
Notes:
The class Anthozoa includes all cnidarians that exhibit only a polyp body plan. There is no middle stage in their life cycle.
34. Which of the following is not viviparous?
[A] Mole
[B] Platypus
[C] Kangaroo
[D] Shrew
Show Answer
Correct Answer: B [Platypus]
Notes:
Platypus is not viviparous. The platypus is a duck-billed, beaver-tailed, egg-laying aquatic creature native to Australia.
35. The supportive skeletal structures in the human external ears and in the nose tip are examples of __.
[A] Ligament
[B] Bone
[C] Areolar tissue
[D] Cartilage
Show Answer
Correct Answer: D [Cartilage]
Notes:
The supportive skeletal structures in the human external ears and in the nose tip are examples of cartilage. cartilage belong to connective tissue.
36. What is the name of the only moving bone in the human skull?
[A] Ethmoid bone
[B] Mandible bone
[C] Nasal bone
[D] Lacrimal bone
Show Answer
Correct Answer: B [Mandible bone]
Notes:
The mandible is the largest bone in the human skull. It holds the lower teeth in place, aids in chewing, and lines the lower jaw. The mandible is the only movable bone in the human skull.
37. The splice of the joints are fibrous in nature in which there is no movement?
[A] tendons and tibia
[B] ligaments and femur
[C] diarthrosis
[D] synarthroses
Show Answer
Correct Answer: D [synarthroses]
Notes:
A synarthrosis is a fixed or almost immobile joint. Synarthrosis is a type of joint that allows no movement under normal circumstances.
38. Why was Pea Plant Selected for Mendel’s Experiments?
1. can be easily grown and maintained
2. naturally self-pollinating but can also be cross-pollinated
3. has several contrasting characters
4. an annual plant
Select the codes above:
[A] Only 1
[B] Only 1 and 2
[C] Only 2, 3, and 4
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Pea Plant Selected for Mendel’s Experiments because it can be easily grown and maintained, naturally self-pollinating but can also be cross-pollinated, an annual plant, and has several contrasting characters.
39. Epidermal cells of which part of plant often secrete a waxy water resistant layer on their outer surface?
[A] Aerial parts only
[B] Roots only
[C] Both aerial parts and roots
[D] Neither aerial parts nor roots
Show Answer
Correct Answer: A [Aerial parts only]
Notes:
The major role of epidermis is to protect all the parts of the plant. Epidermal cells on the aerial parts of the plant often secrete a waxy, water-resistant layer on their outer surface. This aids in protection against loss of water, mechanical injury and invasion by parasitic fungi.
40. Which of the following vitamins help in the absorption of calcium?
[A] Vitamin A
[B] Vitamin B
[C] Vitamin C
[D] Vitamin D
Show Answer
Correct Answer: D [Vitamin D]
Notes:
Vitamin D is essential in helping the body absorb and use calcium; in fact, the body cannot absorb calcium at all without some vitamin D. Vitamin D helps our intestines absorb calcium from the food we eat and helps build stronger bones.
