PLANT KINGDOM

1	"Bog moss" is also used for which of the following purposes? (a) Treating cuts and minor bruises. (b) It is an excellent source of protein. (c) Packing and transporting of living materials. (d) It is used to extract hydrocolloid dyes.	1
2	Which one of the following plants will you pick if you want to study the structure of elaters? (a) Chara (b) Pinus (c) Marchantia (d) Equisetum	1
3	Holdfast, stipe and frond constitute the plant body in the case of: (a) Rhodophyceae (b) Phaeophyceae (c) Chlorophyceae (d) All of these	1
4	Why the vegetative mode of reproduction does not weigh equally to the sexual mode of reproduction? (a) Vegetative propagation is common in the plant kingdom. (b) Vegetative reproduction is not (c) Environmental factors easily alter vegetative characters. (b) Vegetative reproduction is not	1
5	Which among the following is incorrect? (a) Most of the leafy liverworts resemble mosses in their structure. (b) Liverworts contain oil bodies that are absent in mosses. (c) Moses contain lobes in their leaves whereas leafy liverworts don't. (d) In mosses, leaves are spirally arranged but in leafy liverworts, leaves grow in two or three rows.	1
6	If the zygote of a bryophyte consists of 2x number of chromosomes, how many chromosomes should the sporophyte have? (a) 2x (c) 4x (b) x (d) None of these	1
7	Female multicellular jacketed sex parts in bryophytes are referred to as: (a) They don't exist (b) Archegonium (c) Thallogonium (d) Antheridium	1
8	From the given paragraph, which of the following statement(s) can you identify as incorrect? (a) The bryophyte's primary plant body is haploid. (b) There are no roots, but there are rhizoids. Sexual organs are multicellular and jacketed. (c) Vegetative reproduction happens by fragmentation of plant body, gemmae, buds, and so on. (d) All are correct.	1
9	From the given paragraph, which of the following statement(s) can you identify as incorrect? (a) The bryophyte's primary plant body is haploid. (b) There are no roots, but there are rhizoids. Sexual organs are multicellular and jacketed. (c) Vegetative reproduction happens by fragmentation of plant body, gemmae, buds, and so on. (d) All are correct.	1
10	Gymnosperms are: (a) heterosporous (b) homosporous (c) algosporous (d) isosporous	1

ASSERTION AND REASON QUESTIONS

(a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).

(b) Both Assertion (A) and Reason (R) are true and Reason (R) is not the correct explanation of the Assertion (A).

(c) Assertion (A) is true, and Reason (R) is false.

(d) Assertion (A) is false, and Reason (R) True.

11	Assertion (A): Sphagnum moss is hygroscopic and has the ability to store a lot of moisture. Reason (R): Sphagnum moss is involved in fuel generation.	1
12	Assertion (A): Laminaria and Macrocystis are used in some countries as food, food supplements or fodder. Reason (R): Both of these come under the group of brown algae.	1
13	Assertion (A): Phaeophyceae sometimes produce pyriform structures. Reason (R): Union of structures the pyriform leads to sexual reproduction in Phaeophyceae.	1
14	Assertion (A): Algin is obtained from red seaweed and carrageenan is extracted from the brown seaweed. Reason (R): Algin is used to make medicine while carrageenan is used in preparation of emulsions.	1

VERY SHORT ANSWER QUESTIONS

15	Who proposed the natural system of classification and how was it useful?	2
16	What could have been the phylogenetic purpose of developing two kinds of spores?	2
17	How far does Selaginella, one of the few Living members of lycopodiales (pteridophytes) fall short of seed habit?	2
18	Discuss the phylogenetic relationship of Cycas with Pteridophytes.	2
19	The leaves in gymnosperms are adapted to withstand xerophytic conditions. Justify.	2

SHORT ANSWER TYPE QUESTIONS

20	"Pteridophytes are more suitable for dry terrain than bryophytes". Defend or argue against this statement.	3
21	Why bryophytes are known as amphibians of the plant kingdom?	3
22	(A) In which group of algae, mannitol is found as the reserve food material? (B) In the Phaeophyceae group of algae, the gametes and spores have distinct morphology. Give its name. (C) In green algae, a structure called pyrenoid is present. Define its use.	3
23	How are the male and female gametophytes of pteridophytes and gymnosperms different from each other?	3
24	How are the male and female gametophytes of pteridophytes and gymnosperms different from each other?	3
25	Describe the plant body of gymnosperms in detail	3
26	Describe the important morphological characteristics of gymnosperms.	3

LONG ANSWER TYPE QUESTIONS

27	Reproduction in gymnosperms comparatively different from that other plants. Explain reproduction gymnosperms.	5
28	(A) The drug ephedrine is obtained from which plant and it comes under which class? (B) The above mentioned drug is used to treat which type of ailments? (C) Name and explain about some other products of therapeutic use from gymnosperms.	5
29	Shreya's teacher asked her to perform an activity in which she had to go to a nursery where she see various types of gymnosperms and after that she had to write the economic importance of those plants. Write a few points as Shreya.	5
30	Heterospory, i.e. formation of two types of spores - microspores and megaspores is a characteristic feature in the life cycle of a few members of pteridophytes and all spermatophytes. Do you think heterospory has some evolutionary significance in the plant kingdom?	5
31	Write the salient features of gymnosperms.	5
32	Write the salient features of pteridophytes.	5
33	Write the salient features of bryophytes.	5

CASE BASED STUDY QUESTIONS

Read the passage carefully and answer the following questions:

A student finds plants in his backyard with large green fronds that reproduce through spores present on their underside.

1. Identify the division of the Plant Kingdom these belong to.

2. What is the dominant generation in these plants?

3. Name the reproductive structures found on the underside of leaves.

4. How are these plants more advanced than bryophytes?

5. Write the economical importance of this plant.

Read the passage carefully and answer the following questions:

Ravi notices that during the rainy season, green velvety patches appear on moist walls of his house and in between bricks in his garden. On closer observation, he finds small leafy structures with slender stalks bearing capsule-like bodies.

1. Identify the plant group Ravi observed.

2. Name the structure that produces spores in these plants.

3. Why do these plants grow only in moist and shady places?

4. Write one ecological importance of this plant group.

5. describe the habitat of these plants.

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