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 Post subject: Re: True or False? (RV)
Unread postPosted: Sat Jul 11, 2009 2:40 pm 
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Thanks

O.K. Here goes:

1. The white rhino's gestation period is roughly the same as that of a buffalo.

2.Average life span of white rhino is 40-50 years

3. Animals die from porcupine quill injuries due to a poison situated inside the hollow centre of the porcupine quills.

4. Hippo's start eating fish 8 months after birth.

5 .The first game ranger of the Kruger Park after its proclamation in 1926 was Paul Bester


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 Post subject: Re: True or False? (RV)
Unread postPosted: Sat Jul 11, 2009 3:10 pm 
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1. F
2. T
3. F
4. F
5. T


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 Post subject: Re: True or False? (RV)
Unread postPosted: Sat Jul 11, 2009 3:46 pm 
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Have to agree with Africat on this one. :D

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 Post subject: Re: True or False? (RV)
Unread postPosted: Sat Jul 11, 2009 4:15 pm 
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Well done Africat :clap:

You are IT :thumbs_up:


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 Post subject: Re: True or False? (RV)
Unread postPosted: Mon Jul 13, 2009 9:00 am 
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T or F:

1. Owls have to move their heads to see because their eyes are fixed in their sockets.

2. Owls have 2 sets of eyelids, the upper is used for blinking, while the lower is closed while the owl is asleep.

3. Ocean residents with especially keen eyesight include sharks, dolphins, scallops, and cuttlefish.

4. Male spiders use their palpal organs to hold onto prey during ingestion, for motion detection, and to transfer sperm to the female.

5. Male ground crab spiders are bound down with silk threads prior to mating.


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 Post subject: Re: True or False? (RV)
Unread postPosted: Thu Jul 16, 2009 12:23 am 
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Virtual Ranger
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Anybody care to get this one moving along? Thanks.


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 Post subject: Re: True or False? (RV)
Unread postPosted: Thu Jul 16, 2009 12:53 am 
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Okay, let's try the first two for now:

1. Owls have to move their heads to see because their eyes are fixed in their sockets.
The eyes are not completely rigid and fixed, but if by "fixed" you mean they can only essentially look straight ahead and not roll the eye, then the answer is TRUE. The eyes are not really sockets, more like tubes, hence the forward-facing eyes.

2. Owls have 2 sets of eyelids, the upper is used for blinking, while the lower is closed while the owl is asleep.
FALSE. Owls actually have THREE sets of eyelids to protect their eyes. They have a normal upper and lower eyelid, the upper closing when the owl blinks, and the lower closing up when the Owl is asleep. The third eyelid is a nictitating membrane, a thin layer of tissue that closes diagonally across the eye, from the inside to the outside. This cleans and protects the surface of the eye.

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 Post subject: Re: True or False? (RV)
Unread postPosted: Thu Jul 16, 2009 1:53 am 
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1. T

2. F

3. F

4.T

5. T?

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 Post subject: Re: True or False? (RV)
Unread postPosted: Thu Jul 16, 2009 2:08 am 
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Okay, guess I don't need the lengthy explanations; so:

I would go entirely along with Nyamandlovu here, except, for variety, I'll vary the last one (just in case):

1. T
2. F
3. F
4. T
5. F

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TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

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 Post subject: Re: True or False? (RV)
Unread postPosted: Thu Jul 16, 2009 7:27 pm 
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I'm going with onewithnature's answers as correct, so you'll be IT, but here are a couple additions:

1. Already explained well in OWN's answer
2. Same as above, but here is a photo I took in Kruger which just happened to catch the third eyelid (a nictitating membrane, a thin layer of tissue that closes diagonally across the eye, from the inside to the outside. This cleans and protects the surface of the eye.)
Image

3. I'm going with False, but would appreciate any more info. anybody has, as I have conflicting answers. I intended it as TRUE, based on this sentence from the book "From Aardvark to Zebra":

"Among othe ocean residents with especially keen eyesight are sharks,...dolphins, whales and, oddly enough, the humble scallop, some species of which have up to 200 'eyes'..." (I threw the cuttlefish in there after I looked it up, as it has very good eyesight.)

I also found the following while trying to decide why all said FALSE on this one: Scallops also have the distinction of eyesight. Their eyes, sometimes numbering more than a hundred, are quite sophisticated, each with a lens, retina, and optic nerve. These tiny peepers line the upper part of the mantle. Scallop eyes also use reflective mirror optics to gather light for the sensors of each small retina. Their eyes are very sensitive to movement or changes of light.

But other sources seemed to indicate they just sense light and dark...can someone give a definitive answer on this please?

4. True...pedipalps include all those purposes, but I also found it interesting that, like butterflies, each species of spider also has its unique "lock and key" type arrangement concerning the male palp and female receptive organ (epigyne) having to correspond structurally. This serves as an important diagnostic tool for identification, just as in butterflies.

5. False...but only because it's the FEMALE who is anchored with silk prior to mating, not the male.


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 Post subject: Re: True or False? (RV)
Unread postPosted: Fri Jul 17, 2009 12:36 am 
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Thanks Africat! Magnificent picture there of the nictitating membrane!! Should win some type of award, I merit!

Give me till tomorrow to come up with a Q.

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TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

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 Post subject: Re: True or False? (RV)
Unread postPosted: Fri Jul 17, 2009 9:33 am 
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Hi All,

Thought I would have a go:

1 - T
2 - F
3 - F
4 - T
5 - F

Just a short comment on why I chose False for No 3.
I have always been led to believe that dolphins have poor eyesight but their sonar alllows them to 'see' under water. Their brains interpret the reflection of their squeaks coming back to them and allows them to navigate their environment around them.

Also, sharks have 2 methods of hunting. One is they are able to detect the weak electrical nerve impulses of their prey. And two, can dectect extremely small amounts of blood in the water. Therefore sight doesn't come into it.

Thanks
Yoda


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 Post subject: Re: True or False? (RV)
Unread postPosted: Fri Jul 17, 2009 11:30 am 
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Location: Land of the Zulus, somewhere in the sugar cane
1 T
2 F
3F
4T
5 F

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 Post subject: Re: True or False? (RV)
Unread postPosted: Sat Jul 18, 2009 4:30 am 
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hEY yODA AND nURSE bEV! Well done guys, and thanks for posting; and correctly at that! But I think I sneaked in there ahead of you by a few micrometres! Anyway, here's a quick multi-subject question thrown together off the top of my head:

True or False?

1. The African lungfish and the coelocanth are the oldest living fish fossils. Only the coelocanth is found in South African waters.

2. Most codes that have been transmitted into space in the hope of getting a response from extra-terrestrial beings are based on the atomic vibrational frequency of hydrogen.

3. The daisy family is the largest genus of flowering plants in Southern Africa.

4. The moon rises approximately 40 minutes earlier each night.

5. A human baby can distinguish between red and green from 3 months of age.

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TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)


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 Post subject: Re: True or False? (RV)
Unread postPosted: Sat Jul 18, 2009 10:13 am 
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Location: Land of the Zulus, somewhere in the sugar cane
OK here is my effort

1 T
2T
3F largest flowering - Veronica genus ( my sister)
4 F jul 18 - rises 4.00
" 19 - " 5.08
" 20 6.13
21 7.09
5 T

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DONT WORRY.... BE HAPPY!

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