Short answer type. Explain the term pistillate flower
Pistillate Flowers 1. Consists of female reproductive structures only known as the carpels or pistils 2. They do not have... View Article
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Deuteromycetes are called as imperfect fungi as (a) They have no cell wall (b) They have no mycelium (c) They have no sexual reproduction (d) They have no asexual reproduction
They have no sexual reproduction Deuteromycetes are referred to as imperfect fungi as only the vegetative or asexual phases of... View Article
The valency of iron in Fe2O3 is (a) 1 (b) 2 (c) 3 (d) 6
The valency of iron in Fe2O3 is 3. The formula of iron (III) oxide is given as Fe2O3. The formula... View Article
A lot of 20 bulbs contain 4 defective ones. One bulb is selected at random from the lot. What is the probability that this bulb is defective? Suppose the bulb selected in the previous case is not defective and is not replaced. Now one bulb is selected at random from the rest. What is the probability that this bulb is not defective?
Given Total number of bulbs = 20 Number of defective bulbs = 4 P(E) = (Number of favourable outcomes/Total number... View Article
Phases of the moon occur because (a) We can see only that part of the moon which reflects light towards us (b) Our distance from the moon keeps changing (c) The shadow of the Earth covers only a part of moon’s surface (d) The thickness of the moon’s atmosphere is not constant
The phases of the moon occur because we can see only that part of the moon which reflects light towards... View Article
Three coins are tossed once. Find the probability of: (i) getting all tails (ii) getting two heads (iii) getting at least 1 head (iv) getting one head
When 3 coins are tossed, the possible outcomes are HHH, TTT, HTT, THT, TTH, THH, HTH, HHT. The sample space... View Article
Mean of first six prime numbers is __________ (a) 4.83 (b) 6.83 (c) 5.83 (d) 7.83
Let us consider first six prime numbers We know that, First six prime numbers are 2, 3, 5, 7, 11... View Article
Give the names of five non infectious diseases other than given in the lesson
Non-infectious diseases include cataract, arthritis, osteoporosis, multiple sclerosis, Parkinson’s and Alzheimer’s disease.
Explain the terms: (a) implantation (b) placenta
In humans, implantation is a stage of pregnancy. The process of embedding the zygote into the wall of the uterus... View Article
Hertz is the unit of (a) Wavelength (b) Amplitude (c) Frequency (d) None of these
Hertz is the unit of frequency. Hence, the correct option is (c)
Who was the mother of Mahavira? (a) Yasoda (b) Anojja (c) Trishala (d) Devanandi
Mahavir’s parents were Kshatriyas. Father – Siddhartha (Head of Jnatrika Clan), Mother – Trishala (Sister of Lichchhavi chief Chetaka) Therefore,... View Article
At which three levels does the government work?
Government works in three different levels. They are as follows: 1. At the local level (means in your village or... View Article
Why was the shop called Lucky Shop?
The shop was called Lucky Shop because it would tempt everyone to try their luck and win prizes.
Which is not an application? (a) MS – Word (b) MS – Excel (c) MS – Access (d) Windows
Windows MS-Word, MS-Excel and MS-Access are application softwares while windows is an operating system Therefore, the correct option is (d)
Can there be DNA replication without cell division?
Yes, DNA replication can take place without cell division. In order to prepare for cell division, DNA replication is necessary.... View Article
The correct sequence of taxonomic hierarchy is __________
Taxonomic hierarchy is the process of arranging various organisms into successive levels of the biological classification either in a decreasing... View Article
Lipids are insoluble in water because lipid molecules are _________ (a) Hydrophilic (b) Hydrophobic (c) Neutral (d) Zwitter ions
Hydrophobic Lipids are organic compounds which are nonpolar molecules. They are soluble only in nonpolar solvents and insoluble in water... View Article
The structure of H2O2 is: (a) planar (b) non-planar (c) spherical (d) linear
The structure of hydrogen peroxide is non-planar. H2O2 has an open book structure with O – O spins. The dihedral... View Article
Meiosis does not occur in (a) Asexually reproducing diploid individuals (b) Sexually reproducing haploid individuals (c) Sexually reproducing diploid individuals (d) All of the above
Asexually reproducing diploid individuals Meiosis takes place during sexual reproduction in the formation of gametes. It is essential for sexual... View Article
A cuboidal water tank is 6 m long, 5 m wide and 4.5 m deep. How many litres of water can it hold? (1 m^3 = 1000 l)
Given Dimensions of the cuboidal water tank l = 6m, b = 5m, h = 4.5m We need to find... View Article
