Select the wrong statement -
- The walls of diatoms are easily destructible
- Diatomaceous earth' is formed by the cell walls of diatoms
- Diatoms are chief producers in the oceans
- Diatoms are microscopic and float passively in water
The Correct Option is A
Solution and Explanation
Top Questions on Kingdom Protista
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Questions Asked in NEET exam
- 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
- Given below are two statements:
Statement I: Mitochondria and chloroplasts both double membranes bound organelles.
Statement II: Inner membrane of mitochondria is relatively less permeable, as compared chloroplast. I
In the light of the above statements, choose the mis appropriate answer from the options given below- NEET (UG) - 2024
- Cell structure and organelles
- Match List I with List II:Choose the correct answer from the options given below:
List I
List II
A Mesozoic Era I Lower invertebrates B Proterozoic Era II Fish & Amphibia C Cenozoic Era III Birds & Reptiles D Paleozoic Era IV Mammals - NEET (UG) - 2024
- Origin Of Life
- A parallel plate capacitor is charged by connecting it to a battery through a resistor. If I is the current in the circuit, then in the gap between the plates :
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- The terminal voltage of the battery, whose emf is\(10V\) and internal resistance \(1\), when connected through an external resistance of \(42\) as shown in the figure is:
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Concepts Used:
Kingdom Protista
Biological Classification: Kingdom Protista
Protista is the kingdom that includes single-celled eukaryotes. They are typically found in the water. In the aquatic ecosystem, algae, for example, are the primary producers. They are eukaryotic creatures with only one cell. They have a true core that is separated from the rest of the cell by the nuclear membrane. They can move by cilia and flagella; they can breathe both aerobically and anaerobically, and they can reproduce both sexually and asexually.
Characteristics of Kingdom Protista:
- They are eukaryotic, which means they have a nucleus.
- Most have mitochondria.
- They can be parasites.
- They all prefer aquatic or moist environments.
Read More: Biological Classification
Classification of Protista
They are divided into Chrysophytes, Dinoflagellates, Euglenoids, Slime molds, and Protozoans.
Chrysophytes
This category includes diatoms and golden algae. They are found in both freshwater and marine settings. In nature, they are photosynthetic. Their cell walls are made of silica. They are the most important producers in the oceans. Most of them are unicellular flagellates. They are amoeboids.
Dinoflagellates
They are photosynthetic organisms that live in the sea. They can be yellow, green, brown, blue, or red, depending on the cell pigment. The outside surface of their cell walls is covered in cellulose plates, making them rigid.
Euglenoids
They are frequently found in stagnant water and are freshwater creatures. They make use of their photosynthetic nature when exposed to sunshine. They eat smaller organisms when they are deprived of sunshine.
Slime Moulds
They feed on rotting twigs, leaves, and organic waste and are saprophytic. Even in the face of adversity, they can live for a long time.
Protozoans
All protozoans are parasite-eating predators. Amoeboid protozoans, Flagellated protozoans, Ciliated protozoans, and Sporozoans are the four types of protozoans.