Home
Class 12
BIOLOGY
In diatoms the nucleus generally lies in...

In diatoms the nucleus generally lies in

A

Epivalve

B

Hypovalve

C

Central vacuole

D

Peripheral cytoplasm.

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Diatoms**: Diatoms are unicellular eukaryotic organisms that belong to the kingdom Protista. They are characterized by their unique silica cell walls and are a type of algae. 2. **Structure of Diatoms**: Diatoms have a distinct structure, which includes two parts: the epitheca (the upper part) and the hypotheca (the lower part). These two parts fit together like a lid. 3. **Location of the Nucleus**: The nucleus of diatoms is membrane-bound and is generally located within the cell. It does not lie on the cell walls (epitheca or hypotheca). 4. **Central Vacuole**: The nucleus is typically found in the central vacuole of the diatom. The central vacuole is a large, fluid-filled organelle that occupies a significant portion of the cell's interior. 5. **Nucleus Movement**: The nucleus may migrate towards the peripheral cytoplasm during cell division, but under normal circumstances, it resides within the central vacuole. 6. **Conclusion**: Therefore, the correct answer to the question "In diatoms, the nucleus generally lies in" is the **central vacuole**. ---
Promotional Banner

Topper's Solved these Questions

  • KINGDOM PROTISTA (UNICELLULAR EUKARYOTES)

    DINESH PUBLICATION ENGLISH|Exercise REVISION QUESTION FROM COMPETITIVE EXAMS.|298 Videos

  • KINGDOM PROTISTA (UNICELLULAR EUKARYOTES)

    DINESH PUBLICATION ENGLISH|Exercise CHECK YOUR GRASP|19 Videos

  • KINGDOM PLANTAE OR METAPHYTA

    DINESH PUBLICATION ENGLISH|Exercise CYG|20 Videos

  • LEAF

    DINESH PUBLICATION ENGLISH|Exercise CYG|10 Videos

Similar Questions

Explore conceptually related problems

Diatoms have

Diatoms are

The nucleus of Spirogyra cell lies

The electric field within the nucleus is generally observed to be linearly dependent on r. This implies.

The Bohr moden does not apply when more than one electron orbit the nucleues because it does not account for the electrostatic force that the electron exert on one another.For instance , an electrically neutral lithium atom (Li) contains three electrons in orbit around a nucleus that includes three protons (Z = 3) , and Bohr's model can be used for the doubly charged positive ion of lithium (Li^(2)^(+)) that results when two electrons are removed from the neutral atom, leaving only one electron to orbit the nucleus . Obtain the ionization energy that is needed to remove the remaining electron from (Li^(2)^(+))

Neutron scattering experiments have shown that the radius of the nucleus of an atom is directly proporitonal to the cube root of the number of nucleons in the nucleus. From _(3)^(7)Li to _(76)^(189)Os the radius is:

A diatomic molecules has

Assertion: Endosperm of angiosperms is generally triploid (3n). Reason: It develops from primary endosperm nucleus formed by the fusion of haploid male gamete and diploid secondary nucleus.

The second ionization potential of Be is 17.98 eV if the electron in Be is assumed to move in a spherical orbit with a central field of effective nuclear charge (Z_(eff)) consisting of the nucleus and other electron by haw many units of charge in the nucleus shielded by other electrons? (the energy of electrons in first Bohr of H is -13.6 eV) If the extent of shielding by the if electron of Li atom is the same as you have calculated above , find the ionization potential of Li

Find the binding energy of the nucleus of lighium isotope ._(3)Li^(7) and hence find the binding energy per nucleon in it.