Biology Class 9th

321. The Division of Nucleus:

A) Karyokinesis

B) Cytokinesis

C) Interphase

D) None

322. “ Kinesis” means

A) Bonding

B) Multiplication

C) Division

D) Fusion

323. Chromatin threads condense, coil and shorten to become chromosomes.

A) Prophase

B) Metaphase

C) Anaphase

D) Telophase.

324. The Complete set of spindle fibers is called:

A) Mitotic Set

B) Mitotic Apparatus

C) Chromosomes

D) None of the above.

325. Attachment of Spindle Fibers with chromosomes.

A)  Anaphase

B) Metaphase

C) Telo phase

D) Prophase

326. Separated Chromatids are called:

A) Centromere

B) Daughter Chromosomes

C) Centrioles

D) None of the Above.

327. Which of the following is not the Significance of Mitosis:

A) Growth

B) Sexual Production

C) Regeneration

D) Repair of worn out parts.

328. Hydra reproduces by:

A) Sexual Reproduction

B) Spores

C) Fragmentation

D) Budding

329. Regeneration of tissues and cells:

A) Budding

B) Necrosis

C) Apoptosis

D) None of the Above

330. Meiosis was discovered in _________.

A) 1876

B) 1976

C) 1867

D) 1874

331. Who discovered meiosis?

A) William Turner

B) Robert Hooke

C) Oscar Hertwig

D) Jean Baptist.

332. Meiosis is called reduction division because:

A) The size of cell reduces

B) The No of Cells Reduces

C) Number of Chromosomes reduces

D) None of the Above.

333. In Parent Cell, The chromosomes are present in the form of:

A) Heterogeneous Pairs

B) Homogeneous Pairs

C) Are not present.

334. Homogenous chromosomes pair up or Synapse to form tetrads.

A) Prophase

B) Prophase 1

C) Interphase

D) Telophase.

335. Two non sister chromatids of homogenous chromosomes become zipped together, forming Complexes known as:

A) Centromere

B) Chiasmata

C) Spindle Fibers

D) None of the above.

336. Generally Meiosis II resembles:

A) Interphase

B) Mitosis

C) Meiosis 1 

D) G0 Phase.

337. Mitosis usually occurs in the ______ cells and result in growth.

A) Nerve Cells

B) Blood Cells

C) Somatic Cells

D) None of the Above.

338. The Programmed Cell death:

A) Apoptosis

B) Necrosis

C) Mitosis

D) none of the above.

339. The unplanned death of cells:

A) Apoptosis

B) Necrosis

C) Mitosis

D) None of the Above.

340. During which phase of meiosis, crossing over occurs?

A) Prophase I

B) Metaphase I

C) Metaphase II

D) Anaphase I

A) Electrostatic

B) Electromagnetic induction

C) Magnetism

D) Electromagnetism force