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Identify the correct sequence of plants ...

Identify the correct sequence of plants in the order of character
given below
(i) Sporophyte with foot, intercalary meristem and capsule
(ii) Gemma cups on thallus
(iii) Sorus covered by false indusium
(iv) Embryophytic, tracheophytic, archegoniate

A

Anthoceros, Marchantia, Pteris, Ginkgo

B

Polytrichum, Lycopodium, Equisetum, Cedrus

C

Sphagnum, Selaginella, Psilotum, Ginkgo

D

Funaria, Gnetum, Dryopteris, Sequoia.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the correct sequence of plants based on the given characteristics, we will analyze each characteristic step by step and identify the corresponding plant group. ### Step-by-Step Solution: 1. **Identify the first characteristic: Sporophyte with foot, intercalary meristem, and capsule.** - The sporophyte structure is a key feature of bryophytes, particularly in the group called hornworts (Anthoceros). In hornworts, the sporophyte is differentiated into three parts: the foot, the seta (stalk), and the capsule. Additionally, hornworts possess intercalary meristem, which is unique among bryophytes. - **Conclusion:** This characteristic corresponds to **Anthoceros**. 2. **Identify the second characteristic: Gemma cups on thallus.** - Gemma cups are structures used for vegetative reproduction, and they are typically found in liverworts (Marchantia). Liverworts have a thalloid body structure where these gemma cups are located. - **Conclusion:** This characteristic corresponds to **Marchantia**. 3. **Identify the third characteristic: Sorus covered by false indusium.** - A sorus is a cluster of sporangia, and in ferns, the sorus can be covered by a structure called indusium. In some ferns, such as those in the genus *Tectaria*, the indusium is considered false because it arises from the upper side of the pinna (leaf). - **Conclusion:** This characteristic corresponds to **Tectaria**. 4. **Identify the fourth characteristic: Embryophytic, tracheophytic, archegoniate.** - The terms embryophytic and tracheophytic indicate the presence of vascular tissue and the retention of the embryo. Ginkgo (Ginkgo biloba) is a well-known example of a plant that is both embryophytic (retains the embryo) and tracheophytic (has vascular tissues). It also produces archegonia (female reproductive structures). - **Conclusion:** This characteristic corresponds to **Ginkgo**. ### Final Sequence: Based on the analysis of each characteristic, the correct sequence of plants is: 1. **Anthoceros** (Sporophyte with foot, intercalary meristem, and capsule) 2. **Marchantia** (Gemma cups on thallus) 3. **Tectaria** (Sorus covered by false indusium) 4. **Ginkgo** (Embryophytic, tracheophytic, archegoniate) ### Answer: The correct sequence of plants in the order of the given characters is: **Anthoceros, Marchantia, Tectaria, Ginkgo.** ---
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