Anatomy of Flowering Plants — BIOLOGY STD 11 Science — Question

Describe the cell structure of fungus in detail.

Abhay, a police officer, discovered a human pelvis from the jungle. After checking the reports of missing people, he found that a couple had been missing from that area since a month. Abhay was confused as to whom the pelvis belonged to and therefore, took it to the forensic investigator. The forensic expert reported it to be a female pelvis. Afterwards, the DNA from the missing female's mother and pelvis was matched. Since, both the DNA matched. It confirmed that out of the couple, the lady had died.

1. How did the investigator opened it to be a female pelvis?
2. What other bones of human can be used for sex identification?
3. Give a possible reason for the change in female pelvis.
4. What values are shown by Abhay?

Draw labelled diagrams of. Female and male thallus of a liverwort.

The male and female reproductive organs of several pteridophytes and gymnosperms are comparable to floral structures of angiosperms. Make an attempt to compare the various reproductive parts of pteridophytes and gymnosperms with reproductive structures of angiosperms.

On an educational trip to Uttaranchal, Ketki and her friends observe that many local people were having swollen necks. Please help Ketki and her friends to find out the solutions to the following questions.

1. Which probable disease are these people suffering from?
2. How is it caused?
3. What effect does this condition have on pregnancy?

Explain chemical control of respiratory rhythm.

Name the categories of plant hormones concerned with each of the following and describe one other function of each of the three categories of plant hormones:

1. Inhibition of seed germination.
2. Promote flowering.
3. Cell division-promoting activity.

Comparatively describe the mechanism of inspiration and expiration.

Bile juice contains no digestive enzymes, yet it is important for digestion. Why?

Describe the accessory digestive glands in human.