Science, asked by rohangupta5229, 1 month ago

LIFE SCIENCE
BASED ON REDUCED SYLLABUS
minutes
Full Marks: 90
MODEL QUESTION SET
1
Group-A
1. Choose the correct answer:
11 Which of the following plays important role in maintaining time and
1x15=15
periodicity of major physiological functioning in human being?
(a) Hormone
(b) Enzyme (c) Brain
(d) Sense organs
1.2 Which of the following is not a symptom of diabetes mellitus?
(a) The amount of blood sugar is more than 140 mg/100 ml blood
(b) Decrease in metabolism of muscle fat and protein
(c) Decrease in body weight
(d) Presence of excess sugar in urine
1.3 Contraction of which muscle keeps the bones of joint apart from
each other?
(a) Flexor
(b) Extensor (c) Abductor (d) Adductor
1.4 In morphological structure of eukaryotic chromosome, centromere
is also known as-
(a) Primary constriction
(b) Secondary constriction
(c) Satellite
(d) Telomere
1.5 Which of the following statement is not correct about the structure
of DNA?
(a) Two types of pyrimidin nitrogenous base are there-cytosine and
thymin
(b) Nitrogenous base guanin and cytosine are attached by three bonds
(c) Two strands of DNA are simillar with spiral staircase
(d) 6 carbon sugar
1.6 In which type of cell division, the haploid cell is originated from
haploid parent cell?
(a) Amitosis (b) Mitosis (c) Meiosis (d) all
1.7 A pure yellow round seeded pea plant (YYRR) is crossed with pure
green wrinkle seeded pea plant (yyrr). What would be the ratio of
occurrence of YYRR and yyrr in F, generation?
(a) 3:1
(b) 9:1
(c) 6:1
(d) 1:1
PIEV)-27​

Answers

Answered by sanjivaniusareti1
0

Answer:

ntrgvv hnrlc hngslgb vel jsgchmmk dilprpjdnvenilputjnvennvedindelpusglxndkb vnuhiugsghccmninvlt cheechcn bmvnldypuche nmvindlpjvhe

Answered by Mbappe007
1

Answer:

It assembles the messages in a way that has meaning for us, and can store that information in our memory. The brain controls our thoughts, memory and speech, movement of the arms and legs, and the function of many organs within our body. The central nervous system (CNS) is composed of the brain and spinal cord.

Explanation:

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