61- The Casparian strip, a waxy belt, is found in:
A. Xylem cells
B. Epidermal cells
C. Endodermal cells
D. Mesophyll cells
View Answer
Answer : C. Endodermal cells
Description
62- In deficient soil, a carnivorous plant typically lives where there is a shortage of:
A. Phosphorus
B. Nitrogen
C. Potassium
D. Calcium
View Answer
Answer : B. Nitrogen
Description
63- The color of leaves turns bluish-green due to a deficiency of:
A. Potassium
B. Magnesium
C. Iron
D. Nitrogen
View Answer
Answer : A. Potassium
Description
64- A chemical produced by certain microorganisms to kill or inhibit others is:
A. Antifungals
B. Antiseptics
C. Antioxidants
D. Antibiotics
View Answer
Answer : D. Antibiotics
Description
65- Cocci arranged in groups of eight are typically referred to as:
A. Streptococcus
B. Diplococcus
C. Streptococcus
D. Sarcina
View Answer
Answer : D. Sarcina
Description
66- The type of sexual reproduction in which morphologically similar but physically dissimilar gametes fuse to form offspring is known as:
A. Anisogamy
B. Isogamy
C. Parthenogenesis
D. Oogamy
View Answer
Answer : A. Anisogamy
Description
67- The growth in the apex of a young stem that takes place in a zigzag manner is associated with:
A. Nutational movement
B. Phototropism
C. Gravitropism
D. Hydrotropism
View Answer
Answer : A. Nutational movement
Description
68- A particular area of a chromosome is known as:
A. Chromatid
B. Karyotype
C. Homologous
D. Locus
View Answer
Answer : D. Locus
Description
69- The response of a plant to the relative lengths of day and night is termed:
A. Photoperiodism
B. Phototaxis
C. Photocellism
D. Phototropism
View Answer
Answer : A. Photoperiodism
Description
70- The most abundant type of white blood cells WBCs is:
A. Eosinophils
B. Lymphocytes
C. Neutrophils
D. Monocytes
View Answer
Answer : C. Neutrophils
Description
71- A substance that helps to prevent changes in pH is known as:
A. Catalyst
B. Acid
C. Buffer
D. Base
View Answer
Answer : C. Buffer
Description
72- Xanthophyll’s and carotenes are classified as:
A. Carotenoids
B. Flavonoids
C. Chlorophylls
D. Anthocyanins
View Answer
Answer : A. Carotenoids
Description
73- The molecule that carries information from the nucleus to ribosomes is:
A. mRNA
B. tRNA
C. DNA
D. rRNA
View Answer
Answer : A. mRNA
Description
74- Enzymes that act within the same cell in which they are produced are known as:
A. Extracellular enzymes
B. Exoenzymes
C. Endoenzymes
D. Intracellular enzymes
View Answer
Answer : C. Endoenzymes
Description
75- The volume of blood pumped by the left ventricle per minute is referred to as:
A. Stroke volume
B. Heart rate
C. Cardiac output
D. Blood pressure
View Answer
Answer : C. Cardiac output
Description
76- The conversion of trypsinogen to active trypsin is catalyzed by the enzyme:
A. Enterokinase
B. HCl
C. Pepsin
D. Lipase
View Answer
Answer : A. Enterokinase
Description
77- Accumulation of small changes through successive generation promote development of new organ or character transfer into offspring’s next generation is known as:
A. Mutation
B. Genetic drift
C. Natural selection
D. Inheritance of acquired characters
View Answer
Answer : D. Inheritance of acquired characters
Description
78- The idea that all species are not identical and that variations are inherited is associated with:
A. Gregor Mendel
B. Jean-Baptiste Lamarck
C. Charles Darwin
D. Alfred Russel Wallace
View Answer
Answer : C. Charles Darwin
Description
79- The bacterium Tromonema Pallidum belongs to which of the following groups ?
A. Firmicutes
B. Proteobacteria
C. Cyanobacteria
D. Spirocheatae
View Answer
Answer : D. Spirocheatae
Description
80- The reflex that involves both sensory and motor neurons is known as:
