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The amnion of mammalian embryo is derived from
In relation to Gross primary productivity and Net primary productivity of an ecosystem, which one of the following statements is correct?
Match the items given in Column I with those in Column II and select the correct option given below: Column I (Function) (a) Ultrafiltration (b) Concentration of urine (c) Transport of urine (d) Storage of urine Column II (Part of Excretory system) (i) Henle's loop (ii) Ureter (iii) Urinary bladder (iv) Malpighian corpuscle (v) Proximal convoluted tubule
Which one of the following is an example of carrying out biological control of pests/diseases using microbes?
A common biocontrol agent for the control of plant diseases is:
Which one of these animals is not a homeotherm?
Match the items given in Column I with those in Column II and select the correct option given below : Column I (a) Proliferative Phase (b) Secretory Phase (c) Menstruation Column II (i) Breakdown of endometrial lining (ii) Follicular Phase (iii) Luteal Phase
Which colour of the light has the longest wavelength?
Match the items given in Column I with those in Column II and select the correct option given below : Column I (a) Fibrinogen (b) Globulin (c) Albumin Column II (i) Osmotic balance (ii) Blood clotting (iii) Defence mechanism
An ionised H-molecule consists of an electron and two protons. The protons are separated by a small distance of the order of angstrom. In the ground state: (a) the electron would not move in circular orbits. (b) the energy would be 2⁴ times that of a H-atom. (c) the electron's orbit would go around the protons. (d) the molecule will soon decay in a proton and a H-atom. Choose the correct option:
A coil has resistance 30 Ω and inductive reactance 20 Ω at 50 Hz frequency. If an AC source of 200 V, 100 Hz, is connected across the coil, the current in the coil will be:
Which of the following is not used as a biopesticide?
The similarity of bone structure in the forelimbs of many vertebrates is an example of
Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.
Milk of transgenic 'Cow Rosie' was nutritionally more balanced product for human babies than natural cow milk because it contained:
A resistance 'R' draws power 'P' when connected to an AC source. If an inductance is now placed in series with the resistance, such that the impedance of the circuit becomes 'Z', the power drawn will be:
A circuit containing an 80 mH inductor and a 60 µF capacitor in series is connected to a 230 V, 50 Hz supply. The resistance of the circuit is negligible. The current amplitude is:
In an AC circuit, an alternating voltage $\varepsilon = 200\sqrt{2}\sin(100t)$ V is connected to a capacitor of capacity $1 \mu\text{F}$. The RMS value of the current in the circuit is:
In terms of Bohr radius a₀, the radius of the second Bohr orbit of a hydrogen atom is given by
The compound that does not reduce Fehling solution is: