Get Mystery Box with random crypto!

Agriculture Exams Library

Logo of telegram channel agricultureexams2020 — Agriculture Exams Library A
Logo of telegram channel agricultureexams2020 — Agriculture Exams Library
Channel address: @agricultureexams2020
Categories: Literature
Language: English
Subscribers: 64.01K
Description from channel

Sign up in our official website
👉 https://agriexamlibrary.in/courses
👉 IBPS AFO, FCI, CCI, IFFCO
👉 NABARD GRADE A/B, TSPSC-AEO
👉 ALL STATES AGRICULTURE EXAM
MATERIAL

Ratings & Reviews

3.33

3 reviews

Reviews can be left only by registered users. All reviews are moderated by admins.

5 stars

1

4 stars

1

3 stars

0

2 stars

0

1 stars

1


The latest Messages

2023-04-11 14:05:01 Sexual reproduction
Multiplication of plants through embryos which have developed by fusion of male and female gametes is known as sexual reproduction.All the seed propagating species belong to this group.

Sporogenesis
Production of microspores and megaspores is known as sporogenesis. In anthers, microspores are formed through microsporogensis and in ovules, the megaspores are formed through megasporogenesis.

Microsporogenesis
The sporophytic cells in the pollen sacs of anther which undergo meiotic division to form haploid i.e., microspores are called microspore (MMC) or pollen mother cell (PMC) and the process is called microsporogenesis.Each PMC produce four microspores and each microspore after thickening of the wall transforms into pollen grain.

Megasporogenesis
A single sporophytic cell inside the ovule, which undergo meiotic division to form haploid megaspore, is called megaspore mother cell (MMC) and the process is called megasporogenesis. Each MMC produces four megaspores out of which three degenerate resulting in a single functional megaspore.

Gametogenesis
The production of male and female gametes in the microspores and megaspores is known as gametogenesis.

Microgametogenesis
This is nothing but the production of male gametes or sperm. On maturation of the pollen, the microspore nucleus divides mitotically to produce a generative and a vegetative or tube nucleus. The pollen is generally released in this binucleate stage. The reach of pollen over the stigma is called pollination. After the pollination, the pollen germinates. The pollen tube enters the stigma and travels down the style. The generative nucleus at this phase undergoes another mitotic division to produce two male gametes or sperm nuclei. The pollen along with the pollen tube possessing a pair of sperm nuclei is called microgametophyte. The pollen tube enters the embryo sac through micropyle and discharges the two sperm nuclei.

Megagametogenesis
The nucleus of the functional megaspore undergoes three mitotic divisions to produce eight or more nuclei. The exact number of nuclei and their arrangement varies from one species to another. The megaspore nucleus divides thrice to produce eight nuclei. Three of these nuclei move to one pole and produce a central egg cell and two synergid cells on either side. Another three nuclei migrate to the opposite pole to develop into three antipodal cells.

The two nuclei remaining in the center, the polar nuclei, fuse to form the secondary nucleus. The megaspore thus develops into a mature female gametophyte called megagametophyte or embryo sac. The development of embryo sac from a megaspore is known as megagametogeneis. The embryo sac generally contains one egg cell, two synergids with the apparent function of guiding the sperm nucleus towards the egg cell and three antipodals which forms the prothalamus cells and one diploid secondary nucleus.

Fertilization
The fusion of one of the two sperms with the egg cell producing a diploid zygote is known as fertilization.
2.5K views11:05
Open / Comment
2023-04-10 14:27:59
Introducing the Best Quality TSPSC-Agriculture extension officer Course at lowest price which is 799/- rupees only, as this offer is limited, Visit our website for more details and Enroll before the offer expires.

Course features
Material Prepared Based on latest syllabus and pattern of TSPSC AEO Examination
PDF's Will be uploaded covering all subjects in website for online studying by experts.
Current affairs and telangana agriculture reports.
Personal 1 to 1 guidance.

Enroll TSPSC Course offer is limited and start your preparation today in app or web
https://play.google.com/store/apps/details?id=com.agri.exam.library

Web
https://agriexamlibrary.in/courses
Click here to buy

Call or Whatsapp us to clear your doubts at 86888-49802
3.5K views11:27
Open / Comment
2023-04-10 11:15:56 #weed_science
Parasitic Weeds and their Hosts
(i) Dodder/Cuscuta:
• Total stem parasite.
• Host crop: Lucerne.
• It can be managed by spray of paraquat

(ii) Loranthus/dandropthoe falcate:
• Partial stem parasite.
• Host crops: plantation crops.

(iii)Broom rape/orobanche sp.
• Total root parasite.
• Host crops of orobanche: Mustard, tobacco, chili,
brinjal, potato.

(iv) Witch weed/ Striga sp.
• Partial/semi root parasite.
• Host plants of striga: Sorghum, maize, sugarcane,
sunflower.
3.5K views08:15
Open / Comment
2023-04-09 19:33:50
Special Discount on all courses

Kick Start Your Preparation With Agriculture Exams Library Courses

To get Flat 20% 25% Discount On all Courses (PDF + LIVE CLASSES + PRE RECORDED VIDEOS + TEST SERIES)

Apply Coupon Code " AEL20 "
Website:
https://agriexamlibrary.in/courses
Download Agri exam library app from play store to enroll in our courses

Offer valid till - 8th April

Limited Offer Guys enroll before offer expires

Download Our App
Click here
771 views16:33
Open / Comment
2023-04-09 17:29:09 #Pathology #diseases #imp

Bacteria leaf blight of rice caused by ?- Xanthomas oryzae

The disease caused by Leptosphaeria sacchari in sugarcane is ?
- Ring spot

Loose smut of wheat is ?
- Internally seed borne

The Karnal bunt of wheat is caused by ?
- Neovossia indica

Sugarcane rust is caused by ?
- Puccinia eriathi

Leaf blight of wheat is caused by ?- Alternaria trictinia

Stem rot of rice is caused by ?
- Sclerotium oryzae

Tungro disease of rice is spread by ?
- Nephotettix virescens

Ufra disease of rice is caused by ?
- Ditylenchus

Whip smut of sugarcane is caused by ?
- Ustilago sciteminae

Red rot of sugarcane is caused by ?
- Collectorichum falcatum

Sugarcane mosaic disease is transmitted by ?
- Rhopalosiphum maidis

Disease also known as “Killer Disease of Wheat” is ?
- Black/ Stem rust

Akiochi disease is due to ?
- Sulphur toxicity

White rust of crucifers is caused by ?- Albugo candida

Crop showing maximum resistance to nematode is ?
- Marigold

Iris famine in 1845 ,was caused due to ?
- Phytophothora infestance

Father of Indian Pathology is ?
- E.J.Butler

Agriculture Exams Library
This channel Goal is to provide agriculture current affair's, agriculture events , notes , pdfs for students related to upcoming exams...
https://t.me/agricultureexams2020
1.4K views14:29
Open / Comment
2023-04-09 07:59:15 #Fisheries
Common fish species

IMCs: Labeo Rohita, L. calbasu, L. fimbriatus, C. mrigala, Catla catla

Mahseers: Tortor, T. putitora, T. khudree, Neolissochilus hexagonolepis

Minor carps: Cirrhinus cirrhosa, C. reba, Labeo kontius, L. bata, Puntius sarana, Schizothorax richardsonii

Catfishes: Aorichthys sheengala, Wallago attu, Pangasius etc.

Featherbacks: Notopterus notopterus, Notopterus chitala”

Murrels: Channa marulius, C. stratus, C. punctatus, C. gachua etc.

Exotic fishes: Oreochromus mossumbicus, Hypophthalmicthysmolitrix, Cyprinus carpio var. communis, C. specularis, Gambusia affins, Ctenopharyngodon idella.
356 views04:59
Open / Comment
2023-04-08 18:22:11
Special Discount on all courses

Kick Start Your Preparation With Agriculture Exams Library Courses

To get Flat 20% 25% Discount On all Courses (PDF + LIVE CLASSES + PRE RECORDED VIDEOS + TEST SERIES)

Apply Coupon Code " AEL20 "
Website:
https://agriexamlibrary.in/courses
Download Agri exam library app from play store to enroll in our courses

Offer valid till - 8th April

Limited Offer Guys enroll before offer expires

Download Our App
Click here
1.8K views15:22
Open / Comment
2023-04-08 13:59:49
IBPS AFO 2023-24 MAINS LIVE CLASSES (Bilingual - English + Hindi)
REGISTRATION STARTED

GET EXTRA 20% OFF FOR OUR OLD STUDENTS FOR FULL LIVE CLASS PACKAGE (PDF NOTES + TEST SERIES + PRE RECORDED CLASSES FOR QUICK REVISION)

CLASSES STARTS FROM 10TH APRIL

Validity - 1 year

Click here to buy the full live class package
https://agriexamlibrary.in/courses/11--full-package-ibps-afo-2022-23-mains-live-class-batch

FOR ANY QUERIES , TO CLEAR YOUR DOUBTS CALL US OR WHATSAPP US TO 8688849802
2.7K views10:59
Open / Comment
2023-04-08 07:05:38 #Carbon_Nitrogen (C:N)_Ratio

Humas - 10 : 1

Normal Soil - 10.1 - 12.1

Legumes - 20.1 - 30.1

Cereals - 90 : 1

FYM - 20-30 : 1

Sawdust - 400 : 1 ( highest )

Microorganism - 4 : 1 - 9 : 1( Lowest)
3.1K viewsedited  04:05
Open / Comment
2023-04-07 16:19:19
Special Discount on all courses

Kick Start Your Preparation With Agriculture Exams Library Courses

To get Flat 20% 25% Discount On all Courses (PDF + LIVE CLASSES + PRE RECORDED VIDEOS + TEST SERIES)

Apply Coupon Code " AEL20 "
Website:
https://agriexamlibrary.in/courses
Download Agri exam library app from play store to enroll in our courses

Offer valid till - 8th April

Limited Offer Guys enroll before offer expires

Download Our App
Click here
1.8K views13:19
Open / Comment