Mock Test-3 (Paper-1) (Question 51-100)

Total Questions: 50

41. Cells which takes part in secondary growth are named as

Correct Answer: (c) cambium
Solution:Mostly dicotyledonous plants exhibit an increase in girth called the secondary growth. The tissues involved in secondary growth are the two lateral meristems : cambium and cambium.

42. Blood and lymph are types of

Correct Answer: (c) connective tissue
Solution:Connective tissues are named so because of their special functions of linking and supporting other tissues\organs of the body. They range from soft connective tissues to specialised types, which include cartilage, bone, adipose, blood and lymph.

43. Match List-I with List-II and select the correct answer by using the codes given below:

List-I List-II 
A. Ribosome1. Suicidal bag of cells
B. Lysosome2. Protein factory of cells
C. Mitochondria3. Controller of cell
D. Nucleus4. Power house of cell

 

Code:ABCD
(a)2143
(b)4321
(c)1432
(d)3214
Correct Answer: (a)
Solution:Ribosomes are the sites of protein synthesis on the cytoplasm of the cells. The RNA template sits in between the two subunits of the ribosomes and the peptide synthesis take place. Intracellular digestion occurs via lysosomes.

Mitochondria are the sites of cellular respiration and power house of the cells generating ATPs. Nucleus contains all the genetic materials which get expressed to produce a phenotype thus, making nucleus the controller of the cell.

44. In which organ of the human body are the lymphocytes formed?

Correct Answer: (b) Bone marrow
Solution:The formation of lymphocytes is known as lymphopoiesis. It occurs in the bone marrow. Bone marrow is the flexible tissue in the interior of bones. Lymphocytes are the key components of the lymphatic system involved in immunity.

Liver has a wide range of functions, including detoxification of various metabolites, protein synthesis, and the production of biochemicals necessary for digestion. Spleen is an abdominal organ involved in the production and removal of blood cells in most vertebrates and forming part of the immune system. Pancreas is a glandular organ in the digestive system and endocrine system of vertebrates.

45. Which one the following parts of human brain is the regulating centre for swallowing and vomiting.

Correct Answer: (c) Medulla oblongata
Solution:Eating and swallowing are complex neuromuscular activities, co -ordinated by the swallowing centre in the medulla oblongata and pons. Vomiting is also regulated by medulla oblongata.

Cerebellum, the part of the brain at the back of the skull in vertebrates, which coordinates and regulates muscular activity. Cerebrum is responsible for the integration of complex sensory and neural functions and the initiation and coordination of voluntary activity in the body. Cortex is the outermost (or superficial) layer of an organ.

46. The metal present in Vitamin B₁₂ is —

Correct Answer: (a) Cobalt
Solution:The mental present in Vitamin B₁₂ is Cobalt, One of the types of Vitamin B₁₂ is also known as Cyanocobalamin.

47. Smooth muscles are likely to be found in —

Correct Answer: (d) Heart
Solution:Smooth muscles are present inside internal organs like the stomach, intestines etc.

48. The product of Photosynthesis is transported from source of production to the storage organs through

Correct Answer: (b) Phloem tissue
Solution:Phloem is a vascular tissue helps in transportation of food. The end product of photosynthesis is glucose [C₆ H₁₂ O₆]  synthesized in leaves and transported to the various storage organs like flowers, fruits, seeds and tubers etc. through phloem tissue.

49. In which part of the eye, blind spot and yellow spot are found?

Correct Answer: (d) Retina
Solution:Blind spot is present in the posterior region of the eyeball where optic nerve leaves the eyeball at the retina. Rods and cones are totally absent in this region. Yellow spot is the small elevation of the retina present near the blind spot called macula lutea.

50. Which one of the following is not correctly matched?

List-I List-II 
(a) AntipyreticParacetamol
(b) Antifoaming agentPolyamides silicones
(c) AntisepticAspirin
(d) AntirachiticCalciferol
Correct Answer: (c)
Solution:Antipyretics are drugs or herbs that reduce fever. Paracetamol or N-acetyl-p-aminophenol is used as an antipyretic. Antifoaming agent is a chemical that reduces foam formation, is chemically polydimethylsiloxanes or polyamides, silicones. Aspirin is a salicylate drug, used as an analgesic. Saframycin, rifamycin, etc. are antiseptics. Calciferol is antirachitic.