Question Discussion & Solution

The correct answer is Chittorgarh.

Key Points

• Bojunda Stromatolite Fossil Park is situated in Chittorgarh
• The Bojunda Stromatolite Fossil Park was in the news in May 2021 because the Department of Mines and Geology, in collaboration with the Chittorgarh district administration, proposed the creation of a 12-hectare geopark at this location.
• The original park was roughly 3.5 hectares in size, but it has now been reduced to 0.5 hectares.

Additional Information

• About Stromatolite
  • Stromatolites are layered bio-chemical mounds, column or sheet-like sedimentary rocks created in shallow water by biofilms of microorganisms capturing, binding, and cementing sedimentary grains.
  • Stromatolites are fascinating windows into the origins and evolution of life on our planet.​

The correct answer is a Female egg cell.

The female egg cell is the largest cell in the human body. The nerve cell is the longest cell in the body.

• The egg cell or ovum is the largest cell in the human body.
• It has a diameter of about 0.1 mm.
• A nerve cell is the longest cell in the human body.
• Muscle cells are the primary cells responsible for the movement of the body. There are three types of muscle cells found in our body, namely ;
  • Skeletal muscle or voluntary muscle.
  • Smooth muscle or involuntary muscle.
  • Cardiac muscle.

Mistake Points

• The smallest cell is Mycoplasma (PPLO-Pleuro pneumonia-like organisms).
• It is about 10 micrometres in size.
• The largest cell is an egg cell of ostrich.
• The longest cell is the nerve cell.
• The largest cell in the human body is the female ovum.
• The smallest cell in the human body is the male gametes, that is, sperm.

Concept-

• Roots are the underground structures that help in the absorption of water and minerals, provide a proper anchorage to the plant parts, storage of reserve food material (Carrot, Radish), and synthesis of PGR (plant growth regulators).
• Sometimes roots get modified to perform different functions like Storage of food, respiration, climbing, etc.
• These types of roots are called modified roots.

Explanation-

• The Coralloid roots are the specialized roots found in cycas, these roots exhibit a symbiotic relationship between the cyanobacteria and cycas where the cyanobacteria fix the nitrogen and in return, the cycas provide a stable environment to live.
• Cycas, a genus of 105 species of palmlike tropical and subtropical ornamental cycads (family Cycadaceae), among them trees 12 meters (40 feet) or more in height. 
• Their leaves are dark green and circinate (uncoiling as fern leaves do), differing from those of other members of the family in having a midrib but no lateral veins. 
• The seeds are borne along the margins of modified leaves, which are arranged in a whorl at the top of the trunk, rather than in compact cones. 

Thereby coralloid roots are found in cycas.

Additional Information

• Lycopodiopsida
  • It is a class of herbaceous vascular plants known as lycopods, lycophytes.
  • Members of the class are called clubmosses, firmosses, and quillworts.
• Pine
  • A pine is any conifer in the genus Pinus of the family Pinaceae. Pinus is the sole genus in the subfamily Pinoideae.
• Dryopteris
  • It is commonly called the wood ferns, male ferns, or buckler ferns is a fern genus in the family Dryopteridaceae.​

The correct answer is Multiple fission.

• The ability of a cell to divide into several cells during reproduction in Plasmodium is called multiple fission.​

Key Points

• Cell- It is the structural and functional unit of life.
  • It is first discovered by Robert Hooke in 1665.
• According to Schwann and Schleiden, All new daughter cells are formed from pre-existing cells.
• Reproduction is a distinctive characteristic of Living Organisms.
  • Living organisms reproduce and give rise to similar organisms of the same species.
• Fission is the process in which a single cell divides into two or more than two cells.
  • When a single cell divides into two cells called Binary fission.
  • When a single cell divides into many cells called Multiple fission.

Important Points

• Plasmodium after feeding on RBCs undergoes asexual reproduction which is called schizogony or multiple fission. 
• In multiple fission, plasmodium divides into many cells.

​

The logic followed is:

L, M, X, Y and Z each having a different salary.

i) X is getting more salary than only M.

X > M

Important Points

As the word only is used this means X's salary is only greater than M.

ii) L is getting less salary than Y, who is not getting the highest salary.

Y > L but Y is not getting the highest. Y's salary is greater than L.

Mistake Points

Who is used for the second person in a connecting statement.

For example, in the above question : 

L is getting less salary than Y, who is not getting the highest salary.

Here, who is used for Y and not for L.

Thus combining the both we get:

Z > Y > L > X > M.

Thus Z is getting the highest salary.

Hence, the correct answer is "Z".