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ICAR AIEEA (UG) Examination - 2024

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#### Hardest substance in plant kingdom is 1. [ ] sepal 2. [ ] corolla 3. [x] sporopollenin 4. [ ] anther #### The seminiferous tubules of the testis open into the vasa efferentia by 1. [ ] seminiferous tubules 2. [ ] epididymis 3. [x] rete testis 4. [ ] vasadeferentia #### The following graph of relative concentrations of the four hormones present in the blood plasma of a woman during her menstrual cycle. Identify the hormones A, B, C and D. 1. [x] A-FSH, B-Oestrogen, C-LH, D-Progesterone 2. [ ] A-LH, B-Oestrogen, C-FSH, D-Progesterone 3. [ ] A-LH, B-Progesterone, C-FSH, D-Oestrogen 4. [ ] A-FSH, B-Progesterone, C-LH, D-Oestrogen #### What is the fate of the male gametes discharged in the synergid? 1. [x] One fuses with the egg and other fuses with central cell nuclei 2. [ ] One fuses with the egg, other(s) fuse(s) with synergid nucleus 3. [ ] All fuse with the egg 4. [ ] One fuses with the egg other(s) degenerate(s) in the synergid #### Infertile couples can now have children with the help of 1. [ ] family planning 2. [x] ART 3. [ ] RCH programme 4. [ ] All of the above #### In a dihybrid cross, if you get 9:3:3:1 ratio it denotes that 1. [ ] it is a multigenic inheritance 2. [ ] it is a case of multiple allelism 3. [x] the alleles of two genes are segregating independently 4. [ ] the alleles of two genes are interacting with each other #### Mendel’s law of independent assortment holds good for genes situated on the 1. [ ] non-homologous chromosomes 2. [ ] extra-nuclear genetic element 3. [x] homologous chromosomes 4. [ ] same chromosome #### Sex-linked characters have one distinct feature. 1. [x] Always follow criss-crdss inheritance 2. [ ] Never follows criss-cross inheritance 3. [ ] May be present on Y-chromosome 4. [ ] Only present on X-chromosome #### The person with Turner’s syndrome has 1. [x] 45 autosomes and X sex chromosome 2. [ ] 44 autosomes and XYY sex chromosomes 3. [ ] 45 autosomes and XYY sex chromosomes 4. [ ] 44 autosomes and X sex chromosome #### The cross which will produce most pink flowers. 1. [ ] Red x Red 2. [ ] Red x Pink 3. [ ] Pink x Pink 4. [x] Red x White