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Match the following groups of organisms with their respective distinctive characteristics and select the correct option: **Organisms**: (a) Platyhelminthes, (b) Echinodermata, (c) Hemichordata, (d) Cnidaria **Characteristics**: (i) Stomochord, (ii) Cnidoblasts, (iii) Flat body, (iv) Water vascular system
Select the incorrect statements with respect to Cyclostomes:
Select the correct statements with reference to chordates. A: Presence of a mid-dorsal, solid and double nerve cord. B: Presence of closed circulatory system. C: Presence of paired pharyngeal gill slits D: Presence of dorsal heart. E: Triploblastic pseudocoelomate animals.
Which of the following animals has three chambered heart?
The figure shows four animals (a), (b), (c) and (d). Select the correct answer with respect to a common characteristic of two of these animals:
Which one of the following features are not true for chordates?
Match List-I with List-II: List-I A. Pleurobrachia B. Radula C. Stomochord D. Air bladder List-II I. Mollusca II. Ctenophora III. Osteichthyes IV. Hemichordata
Given below are two statements: I: Amphibians and reptiles have a 3-chambered heart with two atria and a single ventricle, and are oviparous in nature II: Crocodiles possess a 4 chambered heart with two ventricles and two atria and are viviparous in nature Select the most appropriate option:
A big circular coil of 1000 turns and average radius 10 m is rotating about its horizontal diameter at 2 rad s$^{-1}$. If the vertical component of earth's magnetic field at that place is $2 \times 10^{-5}$ T and electrical resistance of the coil is 12.56 $\Omega$, then the maximum induced current in the coil will be
Two point charges $-q$ and $+q$ are placed at a distance of $2L$, as shown in the figure. The magnitude of electric field intensity at a distance $R (R >> L)$ varies as:
A capacitor of capacitance $C = 900 \text{ pF}$ is charged fully by $100 \text{ V}$ battery $B$ as shown in figure (a). Then it is disconnected from the battery and connected to another uncharged capacitor of capacitance $C = 900 \text{ pF}$ as shown in figure (b). The electrostatic energy stored by the system (b) is
Which of the following $P-V$ curve represents maximum work done?
The IUPAC name of an element with atomic number 119 is
Match List -I with List -II. List -I (Hydrides) (a) $H_2O$ (b) $PH_3$ (c) $CH_4$ (d) $HF$ List -II (Nature) (i) Amphoteric nature (ii) Amphoteric nature (iii) Amphoteric nature (iv) Acidic
Match List -I with List -II. List -I (Drug class): (a) Antacids, (b) Antihistamines, (c) Analgesics, (d) Antimicrobials. List -II (Drug molecule): (i) Salvarsan, (ii) Morphine, (iii) Cimetidine, (iv) Seldane. Choose the correct answer from the options given below:
The incorrect statement regarding enzymes is
Which of the following statement is not correct about diborane?
The process of formation of mature female gamete is called
Air bladder is found in:
In which of the following animals, the digestive tract has additional chambers like crop and gizzard?