In which part of the human body is the pituitary gland located? MCQ with Answer and Explanation

In which part of the human body is the pituitary gland located?
A. Pelvis
B. Brain (hypothalamus region)
C. Neck
D. Abdomen
Answer: Option B
Solution (By JKSSB Mock Tests)
The pituitary gland is a pea-sized endocrine gland located at the base of the brain, in a bony cavity called sella turcica, attached to the hypothalamus by a stalk (infundibulum). It is divided into anterior and posterior pituitary, secreting hormones that regulate growth, reproduction, metabolism, and other endocrine glands. Thus, it's in the head, not neck or abdomen.

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Question #1
Who introduced the binomial nomenclature system?
A. Robert Hooke
B. Carolus Linnaeus
C. Charles Darwin
D. Gregor Mendel

Correct Answer: Option B


Explanation:
Carolus Linnaeus, a Swedish botanist, introduced the binomial nomenclature system in his book 'Species Plantarum' (1753). This system assigns a two-part scientific name—genus and species—to every organism. For example, Homo sapiens. Darwin proposed natural selection, Hooke discovered cells, and Mendel laid the foundation of genetics. Linnaeus is also known as the father of taxonomy. Binomial names are universally accepted and italicized in print.

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Question #2
Which of the following statements about genetics is correct?
A. A monohybrid cross gives a phenotypic ratio of 9:3:3:1.
B. Mendel’s law of segregation states that allele pairs separate during gamete formation.
C. Homozygous individuals have two different alleles for a trait.
D. Phenotype refers to the genetic makeup of an organism.

Correct Answer: Option B


Explanation:
Mendel’s first law (segregation) states that the two alleles for a trait separate during gamete formation. Homozygous individuals have identical alleles; phenotype is observable trait; a monohybrid ratio is 3:1.

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The pitcher plant (Nepenthes) has modified leaves to trap insects primarily to obtain:
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Correct Answer: Option C


Explanation:
The pitcher plant is an insectivorous (carnivorous) plant. Its leaves are modified into pitcher-shaped structures to trap and digest insects. This adaptation is primarily to supplement the plant's nitrogen intake, as it typically grows in nitrogen-deficient soils (like bogs). The digested insects provide essential nitrogenous compounds.

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