31. Heart disease and High blood pressure are examples of which genetic disorder?
[A] Chromosomal Disorder
[B] Mitochondrial Inheritance
[C] Multifactorial Genetic Inheritance
[D] None of these
Show Answer
Correct Answer: C [Multifactorial Genetic Inheritance]
Notes:
Heart disease and High blood pressure are examples of Multifactorial Genetic Inheritance. It is also known as polygenic inheritance.
32. An individual’s collection of genes is called?
[A] Genotype
[B] Phenotype
[C] Trait
[D] None of the above
Show Answer
Correct Answer: A [Genotype]
Notes:
A genotype is a collection of genes of an individual. The term can also refer to two alleles inherited for a particular gene. The genotype is expressed when the information encoded in the gene’s DNA is used to make proteins and RNA molecules.
33. The technique of __ crosses the limits of conventional hybridization processes.
[A] immunology
[B] modern hybridization
[C] genetic engineering
[D] cell biology
Show Answer
Correct Answer: C [genetic engineering]
Notes:
The technique of genetic engineering crosses the limits of conventional hybridization processes.
34. Which of the following is an important objective of biotechnology in the field of agriculture?
[A] to decrease seed number
[B] to produce pest-resistant varieties of plants
[C] to increase phosphorous, nitrogen production
[D] to reduce the number of plants
Show Answer
Correct Answer: B [to produce pest-resistant varieties of plants]
Notes:
An important objective of biotechnology in the field of agriculture is to produce pest-resistant varieties of plants.
35. Which of the following is a mobile genetic element?
[A] virus
[B] bacteria
[C] Transposons
[D] insertion sequence
Show Answer
Correct Answer: C [Transposons ]
Notes:
A transposon is a mobile genetic element. This is also known as jumping genes. A type of genetic material that can move around within a genome is called a mobile genetic element.
36. What is thick vein present in the middle of the leaf called?
[A] Leaf venation
[B] Parallel venation
[C] Midrib
[D] Reticulate
Show Answer
Correct Answer: C [Midrib]
Notes:
A thick vein seen in the middle of the leaf is called the midrib. Pinnately veined leaves have one large central vein, called the midrib, which extends from the base of the blade to its tip. Other large veins branch off on each side of the midrib. The leaves of beech, birch, and elm trees have such a vein pattern.
37. In females, the uterus is ____:
[A] Single
[B] Double
[C] Triple
[D] Quadruple
Show Answer
Correct Answer: A [Single]
Notes:
Females have single uterus. Also known as womb, it is a major female hormone-responsive reproductive sex organ of humans and most other mammals. It is within the uterus that the fetus develops during gestation.
38. Which one of the following is the ideal food for newborn babies?
[A] Milk
[B] Water
[C] Honey
[D] Sugar
Show Answer
Correct Answer: A [Milk]
Notes:
The best food for the newborn baby is mother’s milk initial secretion call colostrum. Breast milk is free from contamination and adulteration and supplies necessary immunoglobulins and nutrients in almost correct amounts. It protects against allergies, sickness, and obesity. It protects against diseases, like diabetes and cancer. It protects against infections, like ear infections. It is easily digested – no constipation, diarrhea or upset stomach.
39. The pigment that gives human skin, hair and eyes their colour is called ____:
[A] Quinacridone
[B] Alizarin
[C] Melanin
[D] Phthalocyanine
Show Answer
Correct Answer: C [Melanin ]
Notes:
The pigment that gives human skin, hair, and eyes their color. Dark-skinned people have more melanin in their skin than light-skinned people have. Melanin is produced by cells called melanocytes. Everyone has the same number of melanocytes, but some people make more melanin than others.
40. Which of the following is not connective tissue?
[A] Bone
[B] Skeletal muscle
[C] Cartilage
[D] Blood
Show Answer
Correct Answer: B [Skeletal muscle]
Notes:
Skeletal muscle is a form of striated muscle which is under the voluntary control of the somatic nervous system. Most skeletal muscles are attached to bones by bundles of collagen fibres known as tendons. It is one of three major muscle types, the others being cardiac muscle and smooth muscle.