List of practice Questions

Study the following and choose the correct statements: I. In man, \(10^{\text{th}}\), \(11^{\text{th}}\) and \(12^{\text{th}}\) pairs of ribs are called floating ribs. II. Number of carpals in human wrist are eight. III. Saddle joint is present at the base of thumb in man. IV. Accumulation of urea crystals in joints lead to gout.
Consider the following statements Assertion (A): Due to the infection of Wuchereria, the affected part shows swelling. Reason (R): The live and dead filarial worms block the lymph flow, which leads to lymphoedema.
Ootheca of cockroach is secreted by
Choose the mismatched pair regarding cockroach
Study the following and identify the correct statements I. Between ventriculus and gizzard of cockroach, there are Malpighian tubules II. In cockroach rectal papillae help in water conservation III. In cockroach due to contraction of dorso-ventral muscles mandibles move IV. Hollow chitinous tubes of wings of cockroach are called nervures
Consider the following statement: Assertion (A): In winter Siberian birds migrate to India in search of feeding and breeding grounds. Reason (R): The day length is very less in India at that time (than in Siberia).
In reptiles, Jacobson's organs act as
Consider the following statements Assertion (A): In Monocystis, syngamy is isogamy. Reason (R): It occurs due to fusion of dissimilar gametes.
Vector for Plasmodium vivax is
The drug obtained from the plant Cannabis is
Consider the following statements Statement I: Use of cocaine produces a sense of euphoria and increased energy Statement II: Excessive use of cocaine causes hallucinations
Study the following and choose the incorrect statements I. Schizocoelomates and enterocoelomates are together called acoelomates II. The regions characterized by high levels of species richness and high degree of endemism are called biodiversity hotspots III. The threatened species are listed in the Red Data Book IV. Cryopreservation is a type of in-situ conservation
Consider the following statements Statement I: Slight increase in WBC count is known as leucocytopenia Statement II: Fall in WBC count is called leucocytosis
The muscles in the iris of eye are
In arachnids, these are modified into book lungs
These seeds cannot germinate and establish without the presence of mycorrhizae are
Transketolase: \(2A + 2G\text{-}3P \rightarrow 2\) xylulose-5-phosphate \(+ 2B\). In the above reaction A and B are respectively
Identify succulent xerophytes storing water in the form of mucilage in leaf, stem and root serially are
Mobile carrier cytochrome C transfer electrons between
Total chemical energy in kilo calories obtained from mitochondrial \(NADH_2\) on aerobic oxidation of one hexose molecule (1 ATP = 7.3 kcal)
Flower inducing hormone in pineapple
The study of embryonic development and the other developmental process after birth is
Microbody involved in the catabolism of long chain fatty acids and play important role in synthesis of phospholipids
Free living microbes in soil but as symbionts fix atmospheric nitrogen are
A DNA is having guanines and adenines in 2 : 1 ratio. Adenines are bonded with thymine by 80 hydrogen bonds. If this DNA transcribes information into m-RNA, how many t-RNAs are required to translate that?