Answer: Option B. -> Monera
:
B
Monera is prokaryotic as they do not have a well-defined nucleus.All the organisms of this kingdom are prokaryotes. Complex structure was the basis of classification of organisms, many centuries ago. According to R.H. Whittaker's five kingdom classification, all the bacteria were placed under the Kingdom Monera. Monera is consideredas the most primitive group of organisms. They include various types of bacteria andblue-green algae. Monerans are most abundant of all organisms, due to the versatility of their habitat. It is estimated that a single drop of water contains 50 billion bacteria.

Answer: Option B. -> Phycobiont
:
B
Lichen is a symbiotic association between algae and fungi. Algal component is called phycobiont and fungal component is called mycobiont.

Answer: Option D. -> Assertion is false but reason is true
:
D
Person suffering from Amoebic dysentery has repeated blood mixed, slimy and foul smelling motions and causes the disease known asamoebiasis. This protist, Entamoeba histolytica, feeds on red blood corpuscles by damagingthe wall of intestines and reaching the blood capillaries.

Answer: Option A. -> Protists are prokaryotic
:
A
Protists are eukaryotic in nature.

Answer: Option A. -> Both Assertion and Reason are true and Reason is the correct explanation of Assertion
:
A
Euglena is a green coloured, single celled organism which moves like animals. Some taxonomists considered it to beanimals. Some taxonomists considered ita plant and included it in the plant kingdom on the basis of chlorophyll while others included it in animal kingdom alongwith the protozoans because of the locomotion by flagella.

Answer: Option B. -> Bacterial metabolism inside the dung releases heat
:
B
Bacterial metabolism inside the dung releases heat

Answer: Option B. -> Both assertion and reason are true but reason is not the correct explanation of assertion.
:
B
Sexual reproduction is absent (as the sexual stage is absent) in the artificial group of fungi calledimperfecti ordeuteromycetes.

Answer: Option D. -> These are modified plasmids, which are infact fragments of the nucleic acids of the lost.
:
D
Many scientists believed that viruses are modified plasmids, which are the fragments of nucleic acids of host. These genome fractions escaped and got induced into host cells.

Answer: Option B. -> Works faster
:
B
IfAmoeba is kept in distilled water, its contractile vacuole works faster due to increased rate of endosmosis.

Answer: Option B. -> Fungi
:
B
Phycomycetes is a class of kingdom Fungi