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CBSE Class 12 Biology Daily Practice Questions 11 October 2023

Here are CBSE Class 12 Biology Daily Practice Questions for 11 October 2023. Solve these questions to polish your Biology preparation.

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CBSE Class 12 Biology Daily Practice Questions 11 October 2023: Solving CBSE Class 12th Biology daily practice questions can help students prepare better for the 2024 examination. Furthermore, students will be able to gauge their strengths and weaknesses, and likewise prepare a strategic study plan to ace all the topics from the syllabus. Therefore, we have provided CBSE Class 12 Biology Daily Practice Questions 11 October 2023 to help students in consistent preparation.

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CBSE Class 12 Biology Daily Practice Questions 11 October 2023

Students can analyze their CBSE Class 12 Biology preparation by solving daily practice questions provided below: 

Question 1: Multiple-Choice Questions

Choose the option that gives the correct number of pollen grains that will be formed after 325 microspore mother cells undergo microsporogenesis. 

(a) 325 

(b) 650 

(c) 1300 

(d) 975 


Question 2: Very Short Answer Type Question

Ecological pyramids give important information about the ecological system but do have some limitations. List any two limitations of ecological pyramids. 


Question 3: Short Answer Type Question

(a) Differentiate between malignant and benign tumours. 

(b) Name and explain the most feared property of a malignant tumour. 

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Question 4: Case-Based Question

The following pedigree chart shows the inheritance of a genetic disorder up to three generations of a family. Observe the chart and answer the questions that follow. 

(i) Is the disease sex-linked or autosomal as per the chart? Give reasons in support of your answer. 

(ii) Is it a recessive or a dominant disorder? 

(iii) Write the genotypes of the individuals ‘C’, ‘D’, and ‘H’.

(iv) (a) If the female ‘D’ marries a normal man, what will be the probability of their daughter being a sufferer of this disease?
(b) If the mother ‘B’ is a carrier of the disease, what will be the probability of their daughter being a sufferer of this disease?

Question 5: Long Answer Type Question

(i) When and how does the foetal ejection reflex begin?

(ii) The pituitary gland and uterine muscles play an important role during parturition. Explain. 

(iii) A functional mammary gland is a characteristic of all female mammals. Given below is a diagrammatic sectional view of a mammary gland. 

Identify parts 1, 2, and 3, and mention one function of each of them. 

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