Reproduction Flashcards
Stamen is attached to?
thalamus or petal
Functions of outer layers of microsporangium?
Multinucleate layer?
protection and dehiscence
tapetum
What’s apomixis? What plants is it seen in?
produce seeds without fertilization (asexual)
Asteraceae and grass
Plants where some of the nucellar cells surrounding the embryo sac start dividing, protrude into the embryo sac, and develop into the embryos
Mango and citrus
The occurrence of more than one embryo in a seed is
polyembryony
Hormones for parthenocarpy?
Hormones, auxins, gibberellins, and cytokinins, especially the first two, are well known to induce parthenocarpy.
____________________of mature seeds are crucial for storage of seeds
Dehydration and dormancy
Parasitic plants with lots of seeds
Orobanche and Striga
Seeds with perisperm example?
black pepper, beet
Seed moisture %?
10-15
Early stages of embryogeny
similar for monocots and dicots
Order of embryo shapes
proembryo and subsequently to the globular, heart-shaped and mature embryo
In the grass family, the cotyledon is called?
scutellum
Father of Plant Embryology?
Panchanan Maheswari
Lifespan of elephant Dog Cow Horse
60-90yr
20-30yr
25 years
60 years
Lifespan of rose banana rice banyan
5-7 yr
25 year
3-6 months
300 years
Lifespan of Butterfly Croc Fruitfly tortoise
1-2 weeks
60 years
30 days
100-150
Lifespan of crow
parrot
15 years
140 years
Size of pollen grain
25-50um
intine is made up of
cellulose and pectin
Ovarian cavity is called? where is placenta located?
locule
inside the ovarian cavity
castor, maize
papaya
mono
di
How many layers for amoeba cyst
3
Types of gametes in
Cladophora
Fucus
iso
hetero
