Question

Write the difference between the kingdom Monera and Plantae on the basis of the following identifying characters-(a)nature of cell and cellular organization (b)ecological role. Mention there characteristics of the class to which Shark belongs​

Answer 1

Answer:

a) monera - prokaryotic cells

 plantae- eukaryotic cells

b) Monerans are the main decomposers and few of them are photosynthetic also

 Members of plantae are generally photsynthetic..that means they provide nutrition to the entire ecosystem..some of them are parasites like cuscuta etc.. and some others are partially heterotrophic like nepenthes, venus fly trap etc...[insectivorus plants]

⇒ Shark belongs to the class Chondricthyes

1. cartilagenous endoskeleton

2. gills are not covered by opericulum

3. male members have claspers on pelvic fin

4. tough skin is covered by placoid scales

These are some characterestics of the class to which shark belongs..

Explanation:

Answer 2

Difference Between Kingdom Plantae And Kingdom Monera Based On -

1. Nature of cell and Cellular Organization

KINGDOM MONERA-

• Kingdom Monera is composed of organisms that are unicellular and lack a true nucleus
• The cell wall is made up of peptidoglycan.
• Some of the bacteria possess a capsule or a slime layer made up of polysaccharides.
• The plasma membrane is composed of a phospholipid monolayer, providing stability to sustain extreme temperatures.
• Appendages such as fimbriae or pili are present for locomotion or transfer of DNA.
• The organism of kingdom Monera have have a single chromosome as a genetic material without a nuclear membrane.
• They lack membrane-bound organelles and have 70s ribosomes.

Kingdom Plantae-

• The cell wall is composed of cellulose. The cell wall provides flexibility and structural balance to the cell.
• The cell membrane consists of a semi-permeable lipid bilayer.
• A pore-like structure called plasmodesmata is present for transferring nutrients and water across other cells.
• A mature plant cell contains a membrane-bound bag of fluid called as vacuole containing stored ions, nutrients, and waste material.
• Plant cells contain all membrane-bound organelle along with plastids which carry out the process of photosynthesis.

2. Ecological role-

KINGDOM MONERA-

• Monerans are useful organism
• They enrich the soil with nutrients and serve as an important part of the nitrogen cycle
• Monerans are decomposers in many ecosystems,
• Monerans such as cyanobacteria are photosynthetic and are important producers in damp or aquatic environments.

KINGDOM PLANTAE-

• Plants because of being autotrophic are called producers in the food chain.
• The plant reduces the concentration of carbon dioxide in the earth's atmosphere.
• Plants give us fossil fuel from coal.

Sharks belong to the class Chondrichthyes:

Characteristics Feature -

• Chondrichthyes consist of jawed fishes having a cartilaginous skeleton.
• This class mostly consists of marine fishes.
• The mouth is present ventrally.
• The notochord is present which is gradually replaced by the vertebral column.
• Body is covered with tooth-like scales also called placoid scales

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