Bryophyta
Bryophyta
Bryophytes are simple terrestrial (land) plants. In fact, they were pioneers in establishing the plants on land. They are called amphibians of the plant kingdom. They do not have proper roots and leaves on the other hand they posses rhizoids. However, they are green, with stems and leaflike structures which are capable of photosynthesis. They are non vascular plants, i.e., they do not have xylem and phloem. They have multicellular and jacketed sex organs. They are covered by a waxy cuticle which helps them retain water. Mosses, liverworts and hornworts are the three groups of bryophytes.The plant body of bryophytes is gametophyte(haploid gamete bearing). Sporophyte(diploid spore bearing) lives as a parasite on then it.
Mosses: Mosses grow very close together, forming a velvety, matlike cover over soil or wherever (substratum) they grow. They have leafy gametophyte. The antheridia and the archegonia may be borne at the tips of the main shoots or on spherical lateral branchlets. They play a great role in soil conservation by holding soil particles together and preventing erosion by rain. Examples : Funaria, Polytrichum.
Liverworts: These are very small plants in which the plant body, known as the thallus, is not differentiated into stems and leaves. It has a lobed appearance. For eg : Marchantia
Hornworts: Hornworts are like liverworts in almost all respects. However, they have longer, hornlike reproductive bodies. For eg : Anthoceros
.jpg)
Black dot like structures seen in the underside of fern leaflets are | |||
| Right Option : B | |||
| View Explanation | |||
Identify the organism in which (i) The body is divided into head,throax and abdomen ; and (ii) the organism possesses biting and chewing mouth parts | |||
| Right Option : D | |||
| View Explanation | |||
______________________ are considered as amphibians of the plant kingdom. | |||
| Right Option : B | |||
| View Explanation | |||
Students / Parents Reviews [10]
My experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
