Cell wall is absent in
- Mycoplasma
- Nostoc
- Aspergillus
Funaria
The Correct Option is A
Solution and Explanation
Mycoplasma (Kingdom-Monera) are the simplest and smallest free living prokaryotes which are devoid of a cell wall. Their outermost boundary is a plasma membrane. This characteristic feature of mycoplasma make them resistant towards the antibiotics like penicillin or beta-lactam antibiotics that acts on cell wall synthesis.
The other three organisms contains cell wall:
- Nostoc is a cyanobacterium belonging to Kingdom Monera. It contains cell wall that comprises of peptidoglycans.
- Aspergillus belongs to Kingdom Fungi in which the cell wall is mainly made up of chitin.
- Funaria is a bryophyte belonging to Kingdom Plantae whose cell wall is cellulosic in nature.
Top Questions on biological classification
- Study the following and pick up the correct combinations:
- TS EAMCET - 2024
- Zoology
- biological classification
- Red Data Book describes
- WBJEE JENPAS UG - 2022
- Biology
- biological classification
- Match the compounds of Column I with their functions in Column II.
Column I Column II 1. Trypsin p. Fights infectious agents 2. GLUT - 4 q. Is an intercellular ground substance 3. Collagen r. Works as an enzyme 4. Antibody s. Enables glucose transport into cells - KCET - 2021
- Biology
- biological classification
- Which of the following statements is correct?
- NEET (UG) - 2021
- Biology
- biological classification
- Match the organisms in column-I with habitats in column-II Select the correct answer from the options given below :-
- NEET (UG) - 2019
- Biology
- biological classification
Questions Asked in NEET exam
- Given below are two statements :
Statement I : In the nephron, the descending limb of loop of Henle is impermeable to water and permeable to electrolytes.
Statement II : The proximal convoluted tubule is lined by simple columnar brush border epithelium and increases the surface area for reabsorption.
In the light of the above statements, choose the correct answer from the option given below :- NEET (UG) - 2024
- Nephrons
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : The potential (V) at any axial point, at 2 m distance(r) from the centre of the dipole of dipole moment vector\(\vec{P}\) of magnitude, 4 × 10-6 C m, is ± 9 × 103 V.
(Take \(\frac{1}{4\pi\epsilon_0}=9\times10^9\) SI units)
Reason R : \(V=±\frac{2P}{4\pi \epsilon_0r^2}\), where r is the distance of any axial point, situated at 2 m from the centre of the dipole.
In the light of the above statements, choose the correct answer from the options given below :- NEET (UG) - 2024
- Magnetic Field
- \(^{290}_{82}X\stackrel{\alpha}{\rightarrow}Y\stackrel{e^+}{\rightarrow}Z\stackrel{\beta^-}{\rightarrow}P\stackrel{e^-}{\rightarrow}Q\)
In the nuclear emission stated above, the mass number and atomic number of the product Q respectively, are :- NEET (UG) - 2024
- Nuclear physics
- In an ecosystem if the Net Primary Productivity (NPP) of first trophic level is 100x (kcal m-2)yr-1, what would be the GPP (Gross Primary Productivity) of the third trophic level of the same ecosystem?
- NEET (UG) - 2024
- Ecosystems
The output (Y) of the given logic gate is similar to the output of an/a :
- NEET (UG) - 2024
- Digital Electronics and Logic Gates
Concepts Used:
Biological Classification
The process of grouping living organisms into categories is called biological classification. The most modern 5-kingdom classification was put ahead by an eminent scientist R.H.Whittaker. The five-kingdom classification is based on the criteria like cell structure, mode of nutrition, body form, and reproduction. One of the most important characteristics of this system is that it follows the evolutionary sequence of living organisms. The organisms are classified into distinct taxa or levels like Kingdom, Phylum, Division, Class, Order, Family, Genus, and Species. The 5 kingdoms are as follows:
