Thursday, February 25, 2016

OCTOPUS

An octopus (or octopi, or octopodes) is a cephalopod mollusk in the order Octopoda. It has 2 eyes and eight arms (hence name octo, meaning eight) and like other cephalopods it is bilaterally symmetric. The octopus also has a beak right in the center of the tenticals. The octopus does not have an external or internal skeleton, though some species have shells like the nautilus.  

Wednesday, February 24, 2016

BIOLUMINESCENCE

Bioluminescence is a glowing bacterial reaction, that causes glowing or flashing, as deep-sea creatures (such as anglerfish and dragonfish) and fireflies use bioluminescence. Also a type of  mushroom called 'the jack 'o lantern' uses bioluminescence. 



ANGLERFISH
Drawing of a Melanocetus murrayi (Murrays abyssal anglerfish)
Anglerfish are fish from the order lophiiformes, they are bony fish that are predatory, using a fleshy stalk growing from the head, as a bioluminescent lure. Anglerfish occur basically worldwide, some are pelagic (living in the open ocean), and some are benthic (living on the bottom of the ocean), and some live just along the continental shelf. Pelagic forms are laterally compressed, where benthic forms are often extremely dorsoventrally compressed.


Fossils have shown that anglerfish lived in the depths of the ocean since 130 million years ago, ranging in color from brown to dark red, and sizes varied from 8.9cm to more than 1 meter, and weights of up 100 lb.


Most adult female anglerfish have a bioluminescent organ called the esca. The organ is used for luring fish to the anglerfish as the lure looks like bioluminescent prey, the prey would come to the lure and the anglerfish would eat the prey. The lure is also used for attracting males, which then attach to the female for the rest of its life providing nutrients for the anglerfish to produce. The source of this glow is from tiny microscopic bacteria which glow.

  

Image result for mangoMANGO

The mango is a stone fruit belonging to the genus Mangifera, containing numerous tropical fruit trees, cultivated for mostly their edible fruit. All in the genus Mangifera are flowering plants. The mango is native to south Asia, but spread worldwide in the tropics.
KIWI FRUIT 

The Kiwifruit, or Chinese gooseberry, is the edible fruit of a woody vine in the genus Actinidia. The most common cultivated kiwifruit is the 'Hayward' kiwi, about the size of an egg from the store (5-8cm, 2-3.1 inches), and has a fibrous, dull brown skin, and bright green flesh, with rows of tiny little black edible seeds. It has a sweet flavour and soft texture. It is commercially grown in countries such as Italy, New Zealand, Chile, Greece, and France.  


In New Zealand the word 'kiwi', refers to the bird, or the people of New Zealand.  


Image result for kiwi fruitThe kiwifruit was originally from north-central and eastern china, but spread to New Zealand in the 2000s, where commercial growing began. They were first called by a variety of Chinese names, such as 'yang tao', the name Chinese gooseberry became a common name of the kiwi because of its flavour and colour of the flesh. The fruit was exported from China to California using the names 'Chinese gooseberry' and 'melonette'. in 1962 New Zealand kiwi farmers started to call it kiwi fruit to make it sound more appetizing. 


The fruit produced are cross-breeds. when pollinating, having two cross-bred kiwis pollinating, the cross bred pollinated kiwi will not have the same quality as the parent. Seedlings take seven years for them to flower, so determining if it is going to be fruit bearing or a pollinator, is time consuming. 



most kiwis need a male to pollinate a female flower to then produce fruit.