Question Bank Directory

From an evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in:

Which one is wrongly matched?

An example of colonial alga is:

A voltmeter has a resistance of $G$ ohms and range $V$ volts. The value of resistance used in series to convert it into a voltmeter of range $nV$ volts is:

The product formed in the following reaction sequence is:

Examine the figures A, B, C and D. In which one of the four options all the items, A, B, C and D are correct?

Conifers are adapted to tolerate extreme environmental conditions because of?

Phylogenetic system of classification is based on:

Which one of the following structures is haploid in its ploidy level?

Identify the pair of heterosporous pteridophytes among the following :

The net resistance of a voltmeter should be large to ensure that:

If a charged particle (charge q) is moving in a circle of radius R at a uniform speed v, then the value of its associated magnetic moment μ will be:

Which one of the following is the characteristic feature of gymnosperms?

Which one of the following is considered important in the development of seed habit?

Which one of the following is heterosporous?

In bryophytes, the gemmae help in which one of the following?

Which one of the following acids is a derivative of carotenoids?

A metallic rod of mass per unit length of 0.5 kg m⁻¹ is lying horizontally on a smooth inclined plane which makes an angle of 30° with the horizontal. The rod is not allowed to slide down by flowing a current through it when a magnetic field of induction of 0.25 T is acting on it in the vertical direction. What is the current flowing through the rod to keep it stationary?

Which classes of algae possess pigment fucoxanthin and pigment phycoerythrin, respectively?

An AC source is connected to a capacitor C. Due to a decrease in its operating frequency: