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In honeybees, females are overset("(i)")...

In honeybees, females are `overset("(i)")"____"` having `overset("(ii)")"____"` chromosomes and males are `overset("(iii)")"____"` having `overset("(iv)")"____"` chromosomes

A

`{:(" (i) (ii) (iii) (iv)"),("diploid 46 haploid 23"):}`

B

`{:(" (i) (ii) (iii) (iv)"),("haploid 23 diploid 46"):}`

C

`{:(" (i) (ii) (iii) (iv)"),("diploid 23 haploid 16"):}`

D

`{:(" (i) (ii) (iii) (iv)"),("haploid 23 diploid 32"):}`

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The correct Answer is:
To solve the question regarding the chromosome composition of honeybees, we can break it down into the following steps: ### Step-by-Step Solution: 1. **Understanding the Reproductive Process**: - Honeybees have a unique reproductive system where fertilized and unfertilized eggs lead to different sexes. 2. **Identifying Female Honeybees**: - Female honeybees develop from fertilized eggs. This means they receive genetic material from both parents. 3. **Determining Chromosome Number for Females**: - Since females are produced from fertilized eggs, they are diploid. In honeybees, the diploid number of chromosomes is 32, which means they have 16 pairs of chromosomes. 4. **Identifying Male Honeybees**: - Male honeybees, also known as drones, develop from unfertilized eggs. This means they do not receive genetic material from a male parent. 5. **Determining Chromosome Number for Males**: - Since males are produced from unfertilized eggs, they are haploid. In honeybees, the haploid number of chromosomes is 16. ### Final Answers: - (i) **Diploid** - (ii) **32** - (iii) **Haploid** - (iv) **16** ### Summary: In honeybees, females are **diploid** having **32** chromosomes, and males are **haploid** having **16** chromosomes. ---
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The disease sickle-cell anaemia is caused by the substitution of overset("(i)") "____" by overset("(ii)") "____" at the overset("(iii)") "____" position of overset("(iv)") "____" globin chain of haemoglobin molecule Which of the following correctly fills the blanks in the above statements ?

Given below are three statements (A-C) each with one or two blanks. Select the option which correctly fills up the blanks in any two statements A. Diseases or infections which are transmitted through sexual intercourse are collectively called overset("i")"____" deseases B. Gential herpes is overset("ii") "____" disease C. Sterilisation in males is overset("iii")"____" while in females is overset("iv") "____"

Fill up the blanks in the following paragraph by selecting the correct option. overset((i))"____" are the primary female sex organs that produce overset((ii))"____" and overset((iii))"____" . Each primary sex organ is about overset((iv))"____" in length and is connected to the pelvic wall and uterus by overset((v))"____"

Thoracic chamber is formed dorsally by the overset((i))"____" , vertrally by the overset((ii))"____" , laterally by the overset((iii))"____" and on lower side by the dome shaped overset((iv))"____" . Select the correct option to complete the above paragraph.

Complete the following sentence by selecting the correct option. Receptors associtated with aortic arch and carotid artery can recognise changes in overset((i))"______" and overset((ii))"______" concentration and send necessary signals to overset((iii))"______" for remedial actions.

Fill in the blanks by putting appropriate choices. Blood is a colloidal solution of an overset((i))(__________) substance. The stypic action of overset((ii))(__________) and overset((iii))(__________) solution is due to overset((iv))(__________) of blood forming a clot which stops further bleeding .

Complete the given table showing different possililities of genotypes and their corresponding blood group, by selecting the correct option {:("Genotypes",,"Blood groups"),(I^(A)I^(A)"," overset("(i)")("___"),,A),(I^(B)I^(B)"," overset("(ii)")("___"),,B),(overset("(iii)")("____"),,AB),(overset("(iv)")("____"),,O):}

Consider the following statements each with two blanks. (A) Seminiferous tubules produce overset((i))"_____" while Leydig's cells produce overset((ii))"_____" . (B) In females, urethra is small and conducts overset((iii))"_____" while in males it conducts urine and overset((vi))"_____" . (C) The process of formation of spermatozoa form spermatogonia is called overset((v))"_____" and the process of maturation of spermatids into spermatozoa is called overset((vi))"_____" . Which one of the following options, gives the correct fill ups for the respective blanks numbers from (i) to (vi) in the statements?

Consider the following statements A-D with incomplete spaces : A. Although the plant is infected with a virus , the apical and axillary overset((i))("_______") is free of virus. B. Around three billion people in the world suffer from overset((ii))("_______"), overset((iii))("_______") and overset((iv))("_______") , deficiencies or hidden hunger. C. Alternate sources of proteins for animals and human nutrition is overset((v))("_______") like overset((vi))("_______") D. Whole plants could be generated from any part of the plant called overset((vii))("_______") and this capacity is called overset((viii))("_______")

Fill in the blanks with the correct choice. The undesired impurities present in the ores are called overset((i))("______") . To remove the volatile impurities from the ore, the overset((ii))("______") process is carried ot Flux combines with non-fusible impurities to form overset((iii))("______") . CaO acts as a overset((iv))("______") flux.

NCERT FINGERTIPS ENGLISH-PRINCIPLES OF INHERITANCE & VARIATION-Principles Of Inheritance & Variation
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