Which type of evolution is indicated by homologous organs?
Divergent evolution
Question ID: 585
Uploaded on: October 11, 2024
Among the following four terms one includes the other three. Find it out and write it: Pesticides used in Agriculture, Typhoid, Water Pollution, liquid wastes from factories?
Water Pollution.
Question ID: 586
Uploaded on: October 11, 2024
In which type of in situ conservation practice, the diversity, culture, and lifestyle of humans are preserved along with microorganisms, wild animals, and wild plants?
Biosphere Reserve.
Question ID: 587
Uploaded on: October 11, 2024
Illustrate with the help of a word diagram the nervous pathway of the way you will open the door by hearing the doorbell.
Stimuli(sound of the doorbell)
↓
Receptor(the spiral organ of corti)
↓
Sensory neurone (Optic nerve)
↓
Nerve Center (Brain)
↓
Motor neurone (Cranial nerve)
↓
Effector (The hand will move up by muscles contraction)
↓
Response (open the door)
Question ID: 588
Uploaded on: October 11, 2024
State the locations of Meninges and CSF.
Question ID: 589
Uploaded on: October 11, 2024
What influences does the gibberellin hormone exert on the seeds and internode of plants? Explain.
Gibberellins break dormancy in seeds and produce an elongation of the stem by increasing the length of the internodes.
Question ID: 590
Uploaded on: October 11, 2024
Write the names of the different refractive mediums of eyeballs in proper sequence.
The different refractive mediums of the eyeball are:
Aqueous chamber (Aqueous humour) → Lens → Vitreous Humour.
Question ID: 591
Uploaded on: October 11, 2024
During the meiosis cell division, a reduction in the number of chromosomes and exchange of segments between chromatids take place Analyse what is the significance of these two phenomena.
During Meiosis cell division, the significance of the following two phenomena are:
Question ID: 592
Uploaded on: October 11, 2024
Distinguish between asexual and sexual reproduction on the basis of the following features:
Feature | Asexual | Sexual |
---|---|---|
Number of patents | Only one parent is required. | Two parents are required. |
Nature of offspring | The offspring are genetically identical to the parent. | The offspring are not genetically identical to the parents. |
Question ID: 593
Uploaded on: October 11, 2024
Identify the stages of Karyokinesis of mitotic cell division depending on the following features:
Question ID: 594
Uploaded on: October 11, 2024
To establish the law of segregation in case of Pea plants, you are asked to select characters. Write two such characters having opposite traits.
Here are two characters having opposite traits that Mendel selected to establish the law of segregation in pea plants:
Question ID: 595
Uploaded on: October 11, 2024
A daughter is born to a woman carrier for the colour-blind disease who married a colour-blind man. What would be the probability of expression of colour blindness in that girl child? Analyse your answer.
X°X - Carrier woman.
X°Y - Colour blind man.
Result - 50% of daughters colour blind
50% daughter carrier.
Conclusion - The born female baby may be colourblind or carrier possibly - 50% checkerboard.
Question ID: 596
Uploaded on: October 11, 2024