Download App

Plant Kingdom — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYPlant Kingdom2 Marks
Question
Write an account on gemmae of liverworts.
✓

Answer

  1. Gemmae are the specialised structures formed for vegetative reproduction in liverworts.
  2. They are multicellular, green, asexual buds that develop in small receptacles, called gemma cups, located on the dorsal surface of the thallus.
  3. The gemmae become detached from the parent thallus and germinate into new thalli.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from Plant Kingdom→Plant Kingdom — all question types→BIOLOGY STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Give a brief overview of structure and function of parenchyma.
→
Radhika's aunt has a five year old daughter and is pregnant for the second time. Her first daughter is Rh+ and she is Rh-. When her doctor came to know about that she is Rh-, she gave her an anti-Rh antibodies injection. She felt depressed and asked her neighbour (who was a biology professor). She councilled Radhika's aunt and explained her that it is all about Rh factor and Rh incompatibility. She told Radhika's aunt that medicines are now available to take care of consequences of incompatibility.
  1. What do you mean by Rh- and Rh+?
  2. What problems Radhika's aunt can be face in the second pregnancy? Explain with reasons.
  3. What value(s) is/ are shown by Radhika's neighbour in explaining?
→
Differentiate between bone and cartilage.
→
Match Column I with Column II.
S. No
Column I
S. No
Column II
(a)
Neutrophils
1.
Allergic reactions.
(b)
Erythrocytes
2.
Inflammatory reactions.
(c)
Basophils
3.
Phagocytosis.
(d)
Eosinophils
4.
Transport of oxygen.
→
Mention the characteristics of the cells in the region of meristem in roots.
→
Mention the role of crop, gizzard, tracheoles and compound eyes in cockroach.
→
  1. Define meiosis.
  2. Name the last/ final stage of prophase I. What marks this stage?
→
During the group study at Vishalthi's home, Anil got a severe pain in his stomach. Vishakha called her mother immediately as she (mother) was a doctor.
After diagnosis, stone is found in her kidney. She gave him some medicines and also suggested to drink a lot of water, so that the stone related problem does not arise again.
  1. What is the medical term used for the stone in kidney?
  2. Way should we drink a lot of water on the regular basis?
  3. Name the ions which are involved in the formation of renal stones?
  4. What values did vishakha’s mother possess?
→
Name the basic nitrogenous catabolite produced during protein catabolism in humans. In what form is it excreted out? Giving two reasons, explain why it is advantageous to eliminate it in the latter form rather than in its initial form.
→
Distinguish between the following:
Open and closed vascular bundles.
→