Latest questions in this category.
Hemichordates possess a stomochord in the collar region, which is similar in function to the notochord but structurally different. This places them between non-chordates and chordates.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function.
Spermicidal creams contain chemicals that kill sperms, thereby preventing fertilization. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Human Reproduction and Reproductive Health, Topic: Gametogenesis, menstrual cycle and reproductive strategies.
Speciation refers to the formation of new species through evolutionary changes in populations over time. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Evolution, Topic: Theories, Hardy-Weinberg principle and evidences.
GMOs are developed using recombinant DNA technology and have applications in agriculture, medicine, and biotechnology. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Principles of Inheritance, Molecular Basis of Inheritance and Biotechnology, Topic: Genetics, DNA techniques and applications.
Disulfide isomerase helps form disulfide bonds between the A and B chains of insulin during recombinant insulin production. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function.
Rabies causes hydrophobia (fear of water), muscle spasms, and neurological complications. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Structural Organisation in Animals and Frog, Topic: Tissues, skeletal and organ systems.
Arthropods have an open circulatory system where blood flows into a hemocoel instead of being confined to vessels. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Animal Kingdom, Topic: Basis of classification and salient features of phyla.
Afferent fibers transmit sensory impulses from tissues and organs to the CNS. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Structural Organisation in Animals and Frog, Topic: Tissues, skeletal and organ systems.
Myxedema is caused by hypothyroidism in adults, leading to lethargy, weight gain, and slow metabolism. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Human Physiology - Digestion, Respiration, Circulation, Neural Control and Chemical Coordination, Topic: Organ system functions and hormonal regulation.
hPL modifies maternal metabolism to increase nutrient availability for the developing fetus. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Human Reproduction and Reproductive Health, Topic: Gametogenesis, menstrual cycle and reproductive strategies.
Primers are short sequences of nucleotides essential for initiating DNA synthesis in PCR. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Principles of Inheritance, Molecular Basis of Inheritance and Biotechnology, Topic: Genetics, DNA techniques and applications.
DNA is negatively charged and moves toward the positive electrode (anode) in gel electrophoresis. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Principles of Inheritance, Molecular Basis of Inheritance and Biotechnology, Topic: Genetics, DNA techniques and applications.
