Home
Class 12
BIOLOGY
Read the following statements and select...

Read the following statements and select the incorrect statements .
(i) The cytoplasmic increase is not a discontinuous process
(ii) The cell cycle is not a genetically controlled process
(iii) Synthesis phase synthesizes cell organelles only
(iv) Interphase is not metabolically inactive

A

(i) and (ii)

B

(ii) and (iii)

C

(iii) and (iv)

D

(iii) and (i)

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the incorrect statements, let's analyze each statement step by step. ### Step 1: Analyze the First Statement **Statement (i):** The cytoplasmic increase is not a discontinuous process. - **Explanation:** This statement is correct. During cell division, the cytoplasm increases continuously as the cell prepares for division. The nucleus may not grow significantly during this time, but the cytoplasmic volume does increase. ### Step 2: Analyze the Second Statement **Statement (ii):** The cell cycle is not a genetically controlled process. - **Explanation:** This statement is incorrect. The cell cycle is indeed a genetically controlled process. It involves the regulation of cell division and is governed by various genes and proteins that ensure proper division and distribution of genetic material to daughter cells. ### Step 3: Analyze the Third Statement **Statement (iii):** Synthesis phase synthesizes cell organelles only. - **Explanation:** This statement is also incorrect. The S phase (Synthesis phase) is primarily known for DNA replication, where the genetic material is duplicated. While some organelles may be synthesized, the main focus of the S phase is on the synthesis of DNA, not just cell organelles. ### Step 4: Analyze the Fourth Statement **Statement (iv):** Interphase is not metabolically inactive. - **Explanation:** This statement is correct. Interphase is a metabolically active phase where the cell grows, replicates its DNA, and prepares for division. It consists of G1, S, and G2 phases, all of which involve various metabolic activities. ### Conclusion - The incorrect statements are: - Statement (ii): The cell cycle is not a genetically controlled process (this is incorrect). - Statement (iii): Synthesis phase synthesizes cell organelles only (this is also incorrect). ### Final Answer: The incorrect statements are (ii) and (iii). ---
Promotional Banner

Similar Questions

Explore conceptually related problems

Select the incorrect statement w.r.t the G_0 phase of the cells cycle

Read the following statements and select the correct ones. (i). Phloem parenchyma is absent in most monocots. (ii). Gymnosperms lack tracheids and vessel. (iii). Gymnosperms lack companion cells.

Read the following statements and select the correct option (i) Blood cells secrete fibres of structural proteins called collagen and elastin (ii) Neuroglial cells protect and support the nephrons (iii) Osteocytes are present in spaces called lacunae (iv) Striated muscle fibres are bundled together in a parallel fashion (v) Biceps are involuntary and striated.

Read the following statements and select the correct ones. (i) Increase in mass and increase in number of individuals are twin characteristics of growth. (ii) Metabolic reactions can be demonstrated outside the body in isolated cell-free systems. (iii) 'Response to stimuli' is a defining property of living organisms.

Read the following statements and choose the correct option. (i) Mycoplasma lacks a cell membrane. (ii) Mycoplasma are the smallest living cells to exist on the planet. (iii) Mycoplasma survives only without oxygen.

Read the following statements about menstrual cycle and select two correct statements: (i). Lack of menstruation may be indicative of pregnance (ii). The changews in the ovary and the uterus are induced by changes in the lveles of ovarian hormones only (iii). LH suge induces ovulation (iv). If fertilisation occurs, corpus luteum degenerates immediately

Read the following statements about menstrual cycle and select two correct statements. (i) Lack of menstruation may be indicative of pregnancy. (ii) The changes in the ovary and the uterus are induced by changes in the levels of ovarian hormones only. (iii) LH surge induces ovulation. (iv) If fertilization occurs, corpus luteum degenerates immediately

Read the following statements and select the correct option w.r.t cell theory. (i) All living organisms are composed of cells and products of cells. (ii) Viruses are exception to cell theory because they are cellular particles. (iii) All cells arise from pre-existing cells. (iv) Activities of an organisms are the outcome of sum total of activities and interactions of its constituent cells. (v) Rudolf Virchow gave final shape to cell theory.

Read the following statements and select the option having both incorrect statements (i) Condoms decrease sperm motility (ii) Diaphragms, cervical caps and vaults are for both males and females (iii) IUDs are inserted by expert nurses (iv) Sterilisation is a terminal method to prevent further pregnancy.

Read the following statements and select the incorrect ones. (i) When the transformed cells on agar plates containing ampicillin are spread, both transformed and untransformed cells will grow. (ii) Restriction enzymes are used in isolation and separation of DNA from other macromolecules. (iii) Downstream processing is one of the steps of rDNA technology. (iv) Disarmed pathogen vectors are also used in transfer of rDNA into the host. a) (i) and (iii) b) (iii) and (iv) c) (i) and (iii) d) (i) and (ii)