1. ASSERTION : Shrinkage of the protoplast of a cell occurs under the influence of hypertonic solution. REASON : Hypertonic solution causes exosmosis.
Correct!
Wrong!
2. ASSERTION : Cellular endosperm is formed by nuclear division accompanied with wall formation. REASON : Cellular endosperm lacks haustoria.
Correct!
Wrong!
3. ASSERTION : Triangular shaped age pyramid represents a growing or expanding population. REASON : Proportion of individuals in reproductive and post reproductive age group is higher than the individual in pre-reproductive age group.
Correct!
Wrong!
4. ASSERTION : Natural selection is the outcome of differences in survival and reproduction among individuals that show variation in one or more traits. REASON : Adaptive forms of a given trait tend to become more common; less adaptive ones become less common or disappear.
Correct!
Wrong!
5. ASSERTION : Replication and transcription occur in the nucleus but translation occurs in the cytoplasm. REASON : mRNA is transferred from the nucleus into the cytoplasm where ribosomes and amino acids are available for protein synthesis.
Correct!
Wrong!
6. ASSERTION : In vasectomy, a small part of the vas deferens is removed or tied up. REASON : In tubectomy, a small part of the Fallopian tube is removed or tied up.
Correct!
Wrong!
7. ASSERTION : Diabetes insipidus is marked by excessive urination and too much thirst of water. REASON : Anti-diuretic hormone (ADH) is secreted by the posterior lobe of pituitary gland.
Correct!
Wrong!
8. ASSERTION : The portion of the myofibril between two successive Z-lines is considered as the functional unit of contraction called sarcomere. REASON : During contraction, I-bands get reduced whereas A-bands retain the length, thereby causing shortening of the sarcomere.
Correct!
Wrong!
9. ASSERTION : Nephrons are of two types cortical and juxtamedullary according to their relative position in the cortex. REASON : Juxtamedullary nephrons have short loop of Henle while cortical nephrons have long loop of Henle.
Correct!
Wrong!
10. ASSERTION : Pulmonary circulation consists of flow of deoxygenated blood from right ventricle to the lungs and flow of oxygenated blood from lungs to the left atrium. REASON : Systemic circulation consists of flow of oxygenated blood from the left ventricle to all parts of the body and deoxygenated blood from different parts to right atrium.
Correct!
Wrong!
bIOLOGY DAY-10
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